21472001121774 has 48 divisors (see below), whose sum is σ = 49962545182800. Its totient is φ = 6133963764096.

The previous prime is 21472001121733. The next prime is 21472001121793. The reversal of 21472001121774 is 47712110027412.

It is a super-2 number, since 2×21472001121774² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3296719 + ... + 7335690.

It is an arithmetic number, because the mean of its divisors is an integer number (1040886357975).

Almost surely, 2^{21472001121774} is an apocalyptic number.

21472001121774 is an abundant number, since it is smaller than the sum of its proper divisors (28490544061026).

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

21472001121774 is a wasteful number, since it uses less digits than its factorization.

21472001121774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639297 (or 10639290 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 39.

The spelling of 21472001121774 in words is "twenty-one trillion, four hundred seventy-two billion, one million, one hundred twenty-one thousand, seven hundred seventy-four".