2122222121010 has 48 divisors (see below), whose sum is σ = 5600132418816. Its totient is φ = 557479242144.

The previous prime is 2122222121009. The next prime is 2122222121057. The reversal of 2122222121010 is 101212222212.

It is a happy number.

2122222121010 is a `hidden beast` number, since 2 + 1 + 222 + 221 + 210 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175965954 + ... + 175978013.

It is an arithmetic number, because the mean of its divisors is an integer number (116669425392).

Almost surely, 2^{2122222121010} is an apocalyptic number.

2122222121010 is an abundant number, since it is smaller than the sum of its proper divisors (3477910297806).

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

2122222121010 is a wasteful number, since it uses less digits than its factorization.

2122222121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351944047 (or 351944044 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2122222121010 its reverse (101212222212), we get a palindrome (2223434343222).

The spelling of 2122222121010 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, ten".