21011022112210 has 32 divisors (see below), whose sum is σ = 40729375572480. Its totient is φ = 7757855414208.

The previous prime is 21011022112187. The next prime is 21011022112261. The reversal of 21011022112210 is 1221122011012.

It is a super-3 number, since 3×21011022112210³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18301111 + ... + 19415269.

It is an arithmetic number, because the mean of its divisors is an integer number (1272792986640).

Almost surely, 2^{21011022112210} is an apocalyptic number.

21011022112210 is a deficient number, since it is larger than the sum of its proper divisors (19718353460270).

21011022112210 is a wasteful number, since it uses less digits than its factorization.

21011022112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259242.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21011022112210 its reverse (1221122011012), we get a palindrome (22232144123222).

The spelling of 21011022112210 in words is "twenty-one trillion, eleven billion, twenty-two million, one hundred twelve thousand, two hundred ten".