210021020100122 has 128 divisors (see below), whose sum is σ = 405374533632000. Its totient is φ = 79253784529920.

The previous prime is 210021020100029. The next prime is 210021020100131. The reversal of 210021020100122 is 221001020120012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 210021020100097 and 210021020100106.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 136748654 + ... + 138275942.

It is an arithmetic number, because the mean of its divisors is an integer number (3166988544000).

Almost surely, 2^{210021020100122} is an apocalyptic number.

210021020100122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210021020100122 is a deficient number, since it is larger than the sum of its proper divisors (195353513531878).

210021020100122 is a wasteful number, since it uses less digits than its factorization.

210021020100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527604.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210021020100122 its reverse (221001020120012), we get a palindrome (431022040220134).

The spelling of 210021020100122 in words is "two hundred ten trillion, twenty-one billion, twenty million, one hundred thousand, one hundred twenty-two".