20212222111002 has 32 divisors (see below), whose sum is σ = 45548669554560. Its totient is φ = 6642514307520.

The previous prime is 20212222110929. The next prime is 20212222111007. The reversal of 20212222111002 is 20011122221202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20212222111007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2635914543 + ... + 2635922210.

It is an arithmetic number, because the mean of its divisors is an integer number (1423395923580).

Almost surely, 2^{20212222111002} is an apocalyptic number.

20212222111002 is an abundant number, since it is smaller than the sum of its proper divisors (25336447443558).

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

20212222111002 is a wasteful number, since it uses less digits than its factorization.

20212222111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271836835 (or 5271836829 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20212222111002 its reverse (20011122221202), we get a palindrome (40223344332204).

The spelling of 20212222111002 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-two million, one hundred eleven thousand, two".