21133154433045 has 16 divisors (see below), whose sum is σ = 34192968972480. Its totient is φ = 11144375071104.

The previous prime is 21133154433019. The next prime is 21133154433071. The reversal of 21133154433045 is 54033445133112.

It is an interprime number because it is at equal distance from previous prime (21133154433019) and next prime (21133154433071).

It is not a de Polignac number, because 21133154433045 - 2⁶ = 21133154432981 is a prime.

It is a super-2 number, since 2×21133154433045² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21133154432994 and 21133154433012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7915037779 + ... + 7915040448.

It is an arithmetic number, because the mean of its divisors is an integer number (2137060560780).

Almost surely, 2^{21133154433045} is an apocalyptic number.

It is an amenable number.

21133154433045 is a deficient number, since it is larger than the sum of its proper divisors (13059814539435).

21133154433045 is a wasteful number, since it uses less digits than its factorization.

21133154433045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15830078324.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 21133154433045 its reverse (54033445133112), we get a palindrome (75166599566157).

The spelling of 21133154433045 in words is "twenty-one trillion, one hundred thirty-three billion, one hundred fifty-four million, four hundred thirty-three thousand, forty-five".