2221121102012 has 48 divisors (see below), whose sum is σ = 4025612048640. Its totient is φ = 1071035094528.

The previous prime is 2221121102009. The next prime is 2221121102021. The reversal of 2221121102012 is 2102011211222.

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, 614756318 + ... + 614759930.

It is an arithmetic number, because the mean of its divisors is an integer number (83866917680).

Almost surely, 2^{2221121102012} is an apocalyptic number.

It is an amenable number.

2221121102012 is a deficient number, since it is larger than the sum of its proper divisors (1804490946628).

2221121102012 is a wasteful number, since it uses less digits than its factorization.

2221121102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8262 (or 8260 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2221121102012 its reverse (2102011211222), we get a palindrome (4323132313234).

The spelling of 2221121102012 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred two thousand, twelve".