121021101210 has 16 divisors (see below), whose sum is σ = 290450642976. Its totient is φ = 32272293648.

The previous prime is 121021101199. The next prime is 121021101211. The reversal of 121021101210 is 12101120121.

It is a super-2 number, since 2×121021101210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121021101211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2017018324 + ... + 2017018383.

It is an arithmetic number, because the mean of its divisors is an integer number (18153165186).

Almost surely, 2^121021101210 is an apocalyptic number.

121021101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021101210 is an abundant number, since it is smaller than the sum of its proper divisors (169429541766).

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

121021101210 is a wasteful number, since it uses less digits than its factorization.

121021101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034036717.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121021101210 its reverse (12101120121), we get a palindrome (133122221331).

The spelling of 121021101210 in words is "one hundred twenty-one billion, twenty-one million, one hundred one thousand, two hundred ten".