210121001022 has 16 divisors (see below), whose sum is σ = 421453078272. Its totient is φ = 69838487640.

The previous prime is 210121000987. The next prime is 210121001033. The reversal of 210121001022 is 220100121012.

It is a junction number, because it is equal to n+sod(n) for n = 210121000989 and 210121001007.

It is a congruent number.

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, 50459254 + ... + 50463417.

It is an arithmetic number, because the mean of its divisors is an integer number (26340817392).

Almost surely, 2^210121001022 is an apocalyptic number.

210121001022 is an abundant number, since it is smaller than the sum of its proper divisors (211332077250).

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

210121001022 is a wasteful number, since it uses less digits than its factorization.

210121001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100923023.

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

Adding to 210121001022 its reverse (220100121012), we get a palindrome (430221122034).

The spelling of 210121001022 in words is "two hundred ten billion, one hundred twenty-one million, one thousand, twenty-two".