121211021012210 has 16 divisors (see below), whose sum is σ = 218202231494016. Its totient is φ = 48479432033328.

The previous prime is 121211021012203. The next prime is 121211021012359. The reversal of 121211021012210 is 12210120112121.

It is a super-2 number, since 2×121211021012210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621944144 + ... + 622139003.

It is an arithmetic number, because the mean of its divisors is an integer number (13637639468376).

Almost surely, 2^{121211021012210} is an apocalyptic number.

121211021012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121211021012210 is a deficient number, since it is larger than the sum of its proper divisors (96991210481806).

121211021012210 is a wasteful number, since it uses less digits than its factorization.

121211021012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244092897.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121211021012210 its reverse (12210120112121), we get a palindrome (133421141124331).

The spelling of 121211021012210 in words is "one hundred twenty-one trillion, two hundred eleven billion, twenty-one million, twelve thousand, two hundred ten".