21200133020153 has 2 divisors, whose sum is σ = 21200133020154. Its totient is φ = 21200133020152.

The previous prime is 21200133020113. The next prime is 21200133020161. The reversal of 21200133020153 is 35102033100212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10707534984169 + 10492598035984 = 3272237^2 + 3239228^2 .

It is a cyclic number.

It is not a de Polignac number, because 21200133020153 - 2²² = 21200128825849 is a prime.

It is a super-2 number, since 2×21200133020153² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21200133020113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600066510076 + 10600066510077.

It is an arithmetic number, because the mean of its divisors is an integer number (10600066510077).

Almost surely, 2^{21200133020153} is an apocalyptic number.

It is an amenable number.

21200133020153 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200133020153 is an equidigital number, since it uses as much as digits as its factorization.

21200133020153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 21200133020153 its reverse (35102033100212), we get a palindrome (56302166120365).

The spelling of 21200133020153 in words is "twenty-one trillion, two hundred billion, one hundred thirty-three million, twenty thousand, one hundred fifty-three".