22021600400265 has 16 divisors (see below), whose sum is σ = 35349331203648. Its totient is φ = 11706596692416.

The previous prime is 22021600400159. The next prime is 22021600400269. The reversal of 22021600400265 is 56200400612022.

It is a happy number.

It is not a de Polignac number, because 22021600400265 - 2¹⁵ = 22021600367497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22021600400269) 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, 2391048642 + ... + 2391057851.

It is an arithmetic number, because the mean of its divisors is an integer number (2209333200228).

Almost surely, 2^{22021600400265} is an apocalyptic number.

It is an amenable number.

22021600400265 is a deficient number, since it is larger than the sum of its proper divisors (13327730803383).

22021600400265 is a wasteful number, since it uses less digits than its factorization.

22021600400265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782106808.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 22021600400265 in words is "twenty-two trillion, twenty-one billion, six hundred million, four hundred thousand, two hundred sixty-five".