21201131010 has 32 divisors (see below), whose sum is σ = 50903079552. Its totient is φ = 5651372160.

The previous prime is 21201130939. The next prime is 21201131011. The reversal of 21201131010 is 1013110212.

It is a super-2 number, since 2×21201131010² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21201131011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64534 + ... + 215793.

It is an arithmetic number, because the mean of its divisors is an integer number (1590721236).

Almost surely, 2^21201131010 is an apocalyptic number.

21201131010 is an abundant number, since it is smaller than the sum of its proper divisors (29701948542).

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

21201131010 is a wasteful number, since it uses less digits than its factorization.

21201131010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282858.

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

Adding to 21201131010 its reverse (1013110212), we get a palindrome (22214241222).

The spelling of 21201131010 in words is "twenty-one billion, two hundred one million, one hundred thirty-one thousand, ten".