20012221002112 has 32 divisors (see below), whose sum is σ = 39869452465920. Its totient is φ = 10005770187264.

The previous prime is 20012221002079. The next prime is 20012221002133. The reversal of 20012221002112 is 21120012221002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 1140658 + ... + 6428494.

It is an arithmetic number, because the mean of its divisors is an integer number (1245920389560).

Almost surely, 2^{20012221002112} is an apocalyptic number.

It is an amenable number.

20012221002112 is a deficient number, since it is larger than the sum of its proper divisors (19857231463808).

20012221002112 is an equidigital number, since it uses as much as digits as its factorization.

20012221002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317418 (or 5317406 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20012221002112 its reverse (21120012221002), we get a palindrome (41132233223114).

The spelling of 20012221002112 in words is "twenty trillion, twelve billion, two hundred twenty-one million, two thousand, one hundred twelve".