22002120021012 has 96 divisors (see below), whose sum is σ = 53658764046720. Its totient is φ = 7007915281920.

The previous prime is 22002120021001. The next prime is 22002120021023. The reversal of 22002120021012 is 21012002120022.

It is an interprime number because it is at equal distance from previous prime (22002120021001) and next prime (22002120021023).

It is a junction number, because it is equal to n+sod(n) for n = 22002120020982 and 22002120021000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36827962 + ... + 37420622.

It is an arithmetic number, because the mean of its divisors is an integer number (558945458820).

Almost surely, 2^{22002120021012} 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 22002120021012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26829382023360).

22002120021012 is an abundant number, since it is smaller than the sum of its proper divisors (31656644025708).

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

22002120021012 is a wasteful number, since it uses less digits than its factorization.

22002120021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593801 (or 593799 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22002120021012 its reverse (21012002120022), we get a palindrome (43014122141034).

The spelling of 22002120021012 in words is "twenty-two trillion, two billion, one hundred twenty million, twenty-one thousand, twelve".