21202210122 has 64 divisors (see below), whose sum is σ = 46001455104. Its totient is φ = 6499725120.

The previous prime is 21202210121. The next prime is 21202210147. The reversal of 21202210122 is 22101220212.

It is not an unprimeable number, because it can be changed into a prime (21202210121) 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, 260103 + ... + 331749.

It is an arithmetic number, because the mean of its divisors is an integer number (718772736).

Almost surely, 2^21202210122 is an apocalyptic number.

21202210122 is an abundant number, since it is smaller than the sum of its proper divisors (24799244982).

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

21202210122 is a wasteful number, since it uses less digits than its factorization.

21202210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71763.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21202210122 its reverse (22101220212), we get a palindrome (43303430334).

The spelling of 21202210122 in words is "twenty-one billion, two hundred two million, two hundred ten thousand, one hundred twenty-two".