121222110121210 has 16 divisors (see below), whose sum is σ = 249371197963776. Its totient is φ = 41561866327248.

The previous prime is 121222110121187. The next prime is 121222110121349. The reversal of 121222110121210 is 12121011222121.

It is a happy number.

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, 865872215082 + ... + 865872215221.

It is an arithmetic number, because the mean of its divisors is an integer number (15585699872736).

Almost surely, 2^{121222110121210} is an apocalyptic number.

121222110121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222110121210 is an abundant number, since it is smaller than the sum of its proper divisors (128149087842566).

121222110121210 is a wasteful number, since it uses less digits than its factorization.

121222110121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731744430317.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121222110121210 its reverse (12121011222121), we get a palindrome (133343121343331).

The spelling of 121222110121210 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, two hundred ten".