21200111012022 has 32 divisors (see below), whose sum is σ = 44170549637760. Its totient is φ = 6777491734080.

The previous prime is 21200111011993. The next prime is 21200111012023. The reversal of 21200111012022 is 22021011100212.

It is a junction number, because it is equal to n+sod(n) for n = 21200111011992 and 21200111012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200111012023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730318648 + ... + 730347675.

It is an arithmetic number, because the mean of its divisors is an integer number (1380329676180).

Almost surely, 2^{21200111012022} is an apocalyptic number.

21200111012022 is an abundant number, since it is smaller than the sum of its proper divisors (22970438625738).

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

21200111012022 is a wasteful number, since it uses less digits than its factorization.

21200111012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460666428.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21200111012022 its reverse (22021011100212), we get a palindrome (43221122112234).

The spelling of 21200111012022 in words is "twenty-one trillion, two hundred billion, one hundred eleven million, twelve thousand, twenty-two".