2101222210122 has 48 divisors (see below), whose sum is σ = 5476869927360. Its totient is φ = 568751875776.

The previous prime is 2101222210117. The next prime is 2101222210133. The reversal of 2101222210122 is 2210122221012.

It is a happy number.

2101222210122 is a `hidden beast` number, since 210 + 1 + 222 + 210 + 1 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2101222210095 and 2101222210104.

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, 438849363 + ... + 438854150.

It is an arithmetic number, because the mean of its divisors is an integer number (114101456820).

Almost surely, 2^{2101222210122} is an apocalyptic number.

2101222210122 is an abundant number, since it is smaller than the sum of its proper divisors (3375647717238).

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

2101222210122 is a wasteful number, since it uses less digits than its factorization.

2101222210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877703547 (or 877703544 counting only the distinct ones).

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

Adding to 2101222210122 its reverse (2210122221012), we get a palindrome (4311344431134).

It can be divided in two parts, 210122221012 and 2, that multiplied together give a palindrome (420244442024).

The spelling of 2101222210122 in words is "two trillion, one hundred one billion, two hundred twenty-two million, two hundred ten thousand, one hundred twenty-two".