121112101021010 has 64 divisors (see below), whose sum is σ = 251994568126464. Its totient is φ = 41419674316800.

The previous prime is 121112101020899. The next prime is 121112101021031. The reversal of 121112101021010 is 10120101211121.

It is a super-2 number, since 2×121112101021010² (a number of 29 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 21248402 + ... + 26338541.

It is an arithmetic number, because the mean of its divisors is an integer number (3937415126976).

Almost surely, 2^{121112101021010} is an apocalyptic number.

121112101021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112101021010 is an abundant number, since it is smaller than the sum of its proper divisors (130882467105454).

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

121112101021010 is a wasteful number, since it uses less digits than its factorization.

121112101021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47588339.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121112101021010 its reverse (10120101211121), we get a palindrome (131232202232131).

The spelling of 121112101021010 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred one million, twenty-one thousand, ten".