21150165022442 has 16 divisors (see below), whose sum is σ = 32003750332800. Its totient is φ = 10482539719248.

The previous prime is 21150165022433. The next prime is 21150165022529. The reversal of 21150165022442 is 24422056105112.

It is a super-3 number, since 3×21150165022442³ (a number of 41 digits) contains 333 as substring.

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, 72723158 + ... + 73013409.

It is an arithmetic number, because the mean of its divisors is an integer number (2000234395800).

Almost surely, 2^{21150165022442} is an apocalyptic number.

21150165022442 is a deficient number, since it is larger than the sum of its proper divisors (10853585310358).

21150165022442 is a wasteful number, since it uses less digits than its factorization.

21150165022442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145737205.

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 21150165022442 in words is "twenty-one trillion, one hundred fifty billion, one hundred sixty-five million, twenty-two thousand, four hundred forty-two".