121102212112020 has 120 divisors (see below), whose sum is σ = 387070089553224. Its totient is φ = 31684603901184.

The previous prime is 121102212112003. The next prime is 121102212112027. The reversal of 121102212112020 is 20211212201121.

121102212112020 is a `hidden beast` number, since 1 + 21 + 10 + 221 + 211 + 202 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 49874047368336 + 71228164743684 = 7062156^2 + 8439678^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121102212111984 and 121102212112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102212112027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 705144819 + ... + 705316538.

Almost surely, 2^{121102212112020} is an apocalyptic number.

121102212112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121102212112020 is an abundant number, since it is smaller than the sum of its proper divisors (265967877441204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121102212112020 is a wasteful number, since it uses less digits than its factorization.

121102212112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410461431 (or 1410461420 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121102212112020 its reverse (20211212201121), we get a palindrome (141313424313141).

It can be divided in two parts, 12110221 and 2112020, that added together give a palindrome (14222241).

The spelling of 121102212112020 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred twelve million, one hundred twelve thousand, twenty".