21010122020030 has 64 divisors (see below), whose sum is σ = 47043313990848. Its totient is φ = 6637504604160.

The previous prime is 21010122020011. The next prime is 21010122020087. The reversal of 21010122020030 is 3002022101012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21010122019987 and 21010122020014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432104897 + ... + 432153516.

It is an arithmetic number, because the mean of its divisors is an integer number (735051781107).

Almost surely, 2^{21010122020030} is an apocalyptic number.

21010122020030 is an abundant number, since it is smaller than the sum of its proper divisors (26033191970818).

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

21010122020030 is a wasteful number, since it uses less digits than its factorization.

21010122020030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864258461.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21010122020030 its reverse (3002022101012), we get a palindrome (24012144121042).

The spelling of 21010122020030 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, twenty thousand, thirty".