22021101012 has 12 divisors (see below), whose sum is σ = 51382569056. Its totient is φ = 7340367000.

The previous prime is 22021100987. The next prime is 22021101029. The reversal of 22021101012 is 21010112022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1835091751 = 22021101012 / (2 + 2 + 0 + 2 + 1 + 1 + 0 + 1 + 0 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917545864 + ... + 917545887.

Almost surely, 2^22021101012 is an apocalyptic number.

It is an amenable number.

22021101012 is an abundant number, since it is smaller than the sum of its proper divisors (29361468044).

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

22021101012 is a wasteful number, since it uses less digits than its factorization.

22021101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835091758 (or 1835091756 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22021101012 its reverse (21010112022), we get a palindrome (43031213034).

The spelling of 22021101012 in words is "twenty-two billion, twenty-one million, one hundred one thousand, twelve".