121002220202020 has 48 divisors (see below), whose sum is σ = 265265476535808. Its totient is φ = 46276808969600.

The previous prime is 121002220201987. The next prime is 121002220202027. The reversal of 121002220202020 is 20202022200121.

It is a super-2 number, since 2×121002220202020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121002220201985 and 121002220202003.

It is not an unprimeable number, because it can be changed into a prime (121002220202027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54862459 + ... + 57025378.

It is an arithmetic number, because the mean of its divisors is an integer number (5526364094496).

Almost surely, 2^{121002220202020} is an apocalyptic number.

121002220202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121002220202020 is an abundant number, since it is smaller than the sum of its proper divisors (144263256333788).

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

121002220202020 is a wasteful number, since it uses less digits than its factorization.

121002220202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111890220 (or 111890218 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 121002220202020 its reverse (20202022200121), we get a palindrome (141204242402141).

It can be divided in two parts, 121002 and 220202020, that added together give a palindrome (220323022).

The spelling of 121002220202020 in words is "one hundred twenty-one trillion, two billion, two hundred twenty million, two hundred two thousand, twenty".