121020111022220 has 12 divisors (see below), whose sum is σ = 254142233146704. Its totient is φ = 48408044408880.

The previous prime is 121020111022163. The next prime is 121020111022277. The reversal of 121020111022220 is 22220111020121.

It is an interprime number because it is at equal distance from previous prime (121020111022163) and next prime (121020111022277).

It is a super-3 number, since 3×121020111022220³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025502775536 + ... + 3025502775575.

It is an arithmetic number, because the mean of its divisors is an integer number (21178519428892).

Almost surely, 2^{121020111022220} is an apocalyptic number.

121020111022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020111022220 is an abundant number, since it is smaller than the sum of its proper divisors (133122122124484).

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

121020111022220 is a wasteful number, since it uses less digits than its factorization.

121020111022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6051005551120 (or 6051005551118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121020111022220 its reverse (22220111020121), we get a palindrome (143240222042341).

The spelling of 121020111022220 in words is "one hundred twenty-one trillion, twenty billion, one hundred eleven million, twenty-two thousand, two hundred twenty".