2221111101210 has 16 divisors (see below), whose sum is σ = 5330666642976. Its totient is φ = 592296293648.

The previous prime is 2221111101193. The next prime is 2221111101211. The reversal of 2221111101210 is 121011111222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2221111101210.

It is not an unprimeable number, because it can be changed into a prime (2221111101211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37018518324 + ... + 37018518383.

It is an arithmetic number, because the mean of its divisors is an integer number (333166665186).

Almost surely, 2^{2221111101210} is an apocalyptic number.

2221111101210 is an abundant number, since it is smaller than the sum of its proper divisors (3109555541766).

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

2221111101210 is a wasteful number, since it uses less digits than its factorization.

2221111101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74037036717.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2221111101210 its reverse (121011111222), we get a palindrome (2342122212432).

The spelling of 2221111101210 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, one hundred one thousand, two hundred ten".