21122120001010 has 48 divisors (see below), whose sum is σ = 45653814639360. Its totient is φ = 7008261009120.

The previous prime is 21122120001007. The next prime is 21122120001071. The reversal of 21122120001010 is 1010002122112.

It is a super-2 number, since 2×21122120001010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 695248800 + ... + 695279179.

It is an arithmetic number, because the mean of its divisors is an integer number (951121138320).

Almost surely, 2^{21122120001010} is an apocalyptic number.

21122120001010 is an abundant number, since it is smaller than the sum of its proper divisors (24531694638350).

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

21122120001010 is a wasteful number, since it uses less digits than its factorization.

21122120001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390528031 (or 1390528024 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21122120001010 its reverse (1010002122112), we get a palindrome (22132122123122).

The spelling of 21122120001010 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred twenty million, one thousand, ten".