210022010121 has 32 divisors (see below), whose sum is σ = 349251821568. Its totient is φ = 109063491840.

The previous prime is 210022010119. The next prime is 210022010131. The reversal of 210022010121 is 121010220012.

It is not a de Polignac number, because 210022010121 - 2¹ = 210022010119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210022010097 and 210022010106.

It is not an unprimeable number, because it can be changed into a prime (210022010131) 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, 493960 + ... + 814886.

It is an arithmetic number, because the mean of its divisors is an integer number (10914119424).

Almost surely, 2^210022010121 is an apocalyptic number.

210022010121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210022010121 is a deficient number, since it is larger than the sum of its proper divisors (139229811447).

210022010121 is a wasteful number, since it uses less digits than its factorization.

210022010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323781.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210022010121 its reverse (121010220012), we get a palindrome (331032230133).

The spelling of 210022010121 in words is "two hundred ten billion, twenty-two million, ten thousand, one hundred twenty-one".