121241010220 has 72 divisors (see below), whose sum is σ = 287420211792. Its totient is φ = 42896050560.

The previous prime is 121241010203. The next prime is 121241010221. The reversal of 121241010220 is 22010142121.

It is a super-2 number, since 2×121241010220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121241010194 and 121241010203.

It is not an unprimeable number, because it can be changed into a prime (121241010221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 587482 + ... + 766561.

It is an arithmetic number, because the mean of its divisors is an integer number (3991947386).

Almost surely, 2^121241010220 is an apocalyptic number.

121241010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121241010220 is an abundant number, since it is smaller than the sum of its proper divisors (166179201572).

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

121241010220 is a wasteful number, since it uses less digits than its factorization.

121241010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354111 (or 1354098 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121241010220 its reverse (22010142121), we get a palindrome (143251152341).

The spelling of 121241010220 in words is "one hundred twenty-one billion, two hundred forty-one million, ten thousand, two hundred twenty".