122221101121210 has 64 divisors (see below), whose sum is σ = 271796278989312. Its totient is φ = 38533887887616.

The previous prime is 122221101121177. The next prime is 122221101121219. The reversal of 122221101121210 is 12121101122221.

It is a happy number.

It is a super-2 number, since 2×122221101121210² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122221101121219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255100789 + ... + 255579448.

It is an arithmetic number, because the mean of its divisors is an integer number (4246816859208).

Almost surely, 2^{122221101121210} is an apocalyptic number.

122221101121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122221101121210 is an abundant number, since it is smaller than the sum of its proper divisors (149575177868102).

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

122221101121210 is a wasteful number, since it uses less digits than its factorization.

122221101121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510680527.

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

Adding to 122221101121210 its reverse (12121101122221), we get a palindrome (134342202243431).

The spelling of 122221101121210 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, two hundred ten".