22102001012 has 48 divisors (see below), whose sum is σ = 47734310400. Its totient is φ = 8719771392.

The previous prime is 22102000979. The next prime is 22102001021. The reversal of 22102001012 is 21010020122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22102000984 and 22102001002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50864 + ... + 216312.

It is an arithmetic number, because the mean of its divisors is an integer number (994464800).

Almost surely, 2^22102001012 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 22102001012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23867155200).

22102001012 is an abundant number, since it is smaller than the sum of its proper divisors (25632309388).

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

22102001012 is a wasteful number, since it uses less digits than its factorization.

22102001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165840 (or 165838 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22102001012 its reverse (21010020122), we get a palindrome (43112021134).

The spelling of 22102001012 in words is "twenty-two billion, one hundred two million, one thousand, twelve".