121002211101020 has 24 divisors (see below), whose sum is σ = 254106574866144. Its totient is φ = 48400516525376.

The previous prime is 121002211100971. The next prime is 121002211101071. The reversal of 121002211101020 is 20101112200121.

It is a junction number, because it is equal to n+sod(n) for n = 121002211100986 and 121002211101004.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20290064 + ... + 25567383.

It is an arithmetic number, because the mean of its divisors is an integer number (10587773952756).

Almost surely, 2^{121002211101020} is an apocalyptic number.

121002211101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121002211101020 is an abundant number, since it is smaller than the sum of its proper divisors (133104363765124).

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

121002211101020 is a wasteful number, since it uses less digits than its factorization.

121002211101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45989389 (or 45989387 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121002211101020 its reverse (20101112200121), we get a palindrome (141103323301141).

The spelling of 121002211101020 in words is "one hundred twenty-one trillion, two billion, two hundred eleven million, one hundred one thousand, twenty".