21213220311010 has 96 divisors (see below), whose sum is σ = 48281700559680. Its totient is φ = 6650890098048.

The previous prime is 21213220310993. The next prime is 21213220311083. The reversal of 21213220311010 is 1011302231212.

It is a super-2 number, since 2×21213220311010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14879980 + ... + 16243159.

It is an arithmetic number, because the mean of its divisors is an integer number (502934380830).

Almost surely, 2^{21213220311010} is an apocalyptic number.

21213220311010 is an abundant number, since it is smaller than the sum of its proper divisors (27068480248670).

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

21213220311010 is a wasteful number, since it uses less digits than its factorization.

21213220311010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31123280 (or 31123273 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21213220311010 its reverse (1011302231212), we get a palindrome (22224522542222).

The spelling of 21213220311010 in words is "twenty-one trillion, two hundred thirteen billion, two hundred twenty million, three hundred eleven thousand, ten".