21011202222010 has 128 divisors (see below), whose sum is σ = 50782636896768. Its totient is φ = 6044810112000.

The previous prime is 21011202221941. The next prime is 21011202222061. The reversal of 21011202222010 is 1022220211012.

It is a happy number.

It is a super-2 number, since 2×21011202222010² (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 63 ways as a sum of consecutive naturals, for example, 191546580 + ... + 191656240.

It is an arithmetic number, because the mean of its divisors is an integer number (396739350756).

Almost surely, 2^{21011202222010} is an apocalyptic number.

21011202222010 is an abundant number, since it is smaller than the sum of its proper divisors (29771434674758).

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

21011202222010 is a wasteful number, since it uses less digits than its factorization.

21011202222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128840.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21011202222010 its reverse (1022220211012), we get a palindrome (22033422433022).

It can be divided in two parts, 21011202 and 222010, that added together give a palindrome (21233212).

The spelling of 21011202222010 in words is "twenty-one trillion, eleven billion, two hundred two million, two hundred twenty-two thousand, ten".