21210121011022 has 16 divisors (see below), whose sum is σ = 32438898247680. Its totient is φ = 10398093554872.

The previous prime is 21210121010929. The next prime is 21210121011059. The reversal of 21210121011022 is 22011012101212.

It is a junction number, because it is equal to n+sod(n) for n = 21210121010987 and 21210121011005.

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, 234611188 + ... + 234701575.

It is an arithmetic number, because the mean of its divisors is an integer number (2027431140480).

Almost surely, 2^{21210121011022} is an apocalyptic number.

21210121011022 is a deficient number, since it is larger than the sum of its proper divisors (11228777236658).

21210121011022 is a wasteful number, since it uses less digits than its factorization.

21210121011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469313207.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21210121011022 its reverse (22011012101212), we get a palindrome (43221133112234).

The spelling of 21210121011022 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty-one million, eleven thousand, twenty-two".