10211220221012 has 12 divisors (see below), whose sum is σ = 18305480152596. Its totient is φ = 4981083034560.

The previous prime is 10211220220979. The next prime is 10211220221039. The reversal of 10211220221012 is 21012202211201.

It can be written as a sum of positive squares in 2 ways, for example, as 5281337149456 + 4929883071556 = 2298116^2 + 2220334^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31131768803 + ... + 31131769130.

It is an arithmetic number, because the mean of its divisors is an integer number (1525456679383).

Almost surely, 2^{10211220221012} is an apocalyptic number.

It is an amenable number.

10211220221012 is a deficient number, since it is larger than the sum of its proper divisors (8094259931584).

10211220221012 is a wasteful number, since it uses less digits than its factorization.

10211220221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62263537978 (or 62263537976 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10211220221012 its reverse (21012202211201), we get a palindrome (31223422432213).

The spelling of 10211220221012 in words is "ten trillion, two hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, twelve".