21910245092052 has 24 divisors (see below), whose sum is σ = 51164512005600. Its totient is φ = 7297614060576.

The previous prime is 21910245091993. The next prime is 21910245092207. The reversal of 21910245092052 is 25029054201912.

It is a super-3 number, since 3×21910245092052³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21910245091995 and 21910245092013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725105527 + ... + 725135742.

It is an arithmetic number, because the mean of its divisors is an integer number (2131854666900).

Almost surely, 2^{21910245092052} is an apocalyptic number.

It is an amenable number.

21910245092052 is an abundant number, since it is smaller than the sum of its proper divisors (29254266913548).

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

21910245092052 is a wasteful number, since it uses less digits than its factorization.

21910245092052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450242535 (or 1450242533 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

Adding to 21910245092052 its reverse (25029054201912), we get a palindrome (46939299293964).

The spelling of 21910245092052 in words is "twenty-one trillion, nine hundred ten billion, two hundred forty-five million, ninety-two thousand, fifty-two".