21122210021010 has 192 divisors, whose sum is σ = 60024932278272. Its totient is φ = 4659660778752.

The previous prime is 21122210020963. The next prime is 21122210021041. The reversal of 21122210021010 is 1012001222112.

It is a super-2 number, since 2×21122210021010² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 488658259 + ... + 488701481.

It is an arithmetic number, because the mean of its divisors is an integer number (312629855616).

Almost surely, 2^{21122210021010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21122210021010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30012466139136).

21122210021010 is an abundant number, since it is smaller than the sum of its proper divisors (38902722257262).

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

21122210021010 is a wasteful number, since it uses less digits than its factorization.

21122210021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46065 (or 46036 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21122210021010 its reverse (1012001222112), we get a palindrome (22134211243122).

The spelling of 21122210021010 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred ten million, twenty-one thousand, ten".