210021010100122 has 16 divisors (see below), whose sum is σ = 339284273662152. Its totient is φ = 96927183881280.

The previous prime is 210021010100093. The next prime is 210021010100147. The reversal of 210021010100122 is 221001010120012.

It can be written as a sum of positive squares in 4 ways, for example, as 198160211609721 + 11860798490401 = 14076939^2 + 3443951^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 232457593 + ... + 233359324.

Almost surely, 2^{210021010100122} is an apocalyptic number.

210021010100122 is a deficient number, since it is larger than the sum of its proper divisors (129263263562030).

210021010100122 is a wasteful number, since it uses less digits than its factorization.

210021010100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465834273.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210021010100122 its reverse (221001010120012), we get a palindrome (431022020220134).

The spelling of 210021010100122 in words is "two hundred ten trillion, twenty-one billion, ten million, one hundred thousand, one hundred twenty-two".