22021132612752 has 480 divisors, whose sum is σ = 79219514626560. Its totient is φ = 5805214894080.

The previous prime is 22021132612649. The next prime is 22021132612783. The reversal of 22021132612752 is 25721623112022.

22021132612752 is a `hidden beast` number, since 2 + 2 + 0 + 2 + 1 + 1 + 32 + 612 + 7 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 671707753 + ... + 671740535.

It is an arithmetic number, because the mean of its divisors is an integer number (165040655472).

Almost surely, 2^{22021132612752} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22021132612752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39609757313280).

22021132612752 is an abundant number, since it is smaller than the sum of its proper divisors (57198382013808).

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

22021132612752 is a wasteful number, since it uses less digits than its factorization.

22021132612752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35268 (or 35249 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 22021132612752 its reverse (25721623112022), we get a palindrome (47742755724774).

The spelling of 22021132612752 in words is "twenty-two trillion, twenty-one billion, one hundred thirty-two million, six hundred twelve thousand, seven hundred fifty-two".