2221202121102 has 32 divisors (see below), whose sum is σ = 5019665817600. Its totient is φ = 727851541464.

The previous prime is 2221202121041. The next prime is 2221202121113. The reversal of 2221202121102 is 2011212021222.

It is a happy number.

2221202121102 is a `hidden beast` number, since 222 + 120 + 212 + 110 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348584718 + ... + 348591089.

It is an arithmetic number, because the mean of its divisors is an integer number (156864556800).

Almost surely, 2^{2221202121102} is an apocalyptic number.

2221202121102 is an abundant number, since it is smaller than the sum of its proper divisors (2798463696498).

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

2221202121102 is a wasteful number, since it uses less digits than its factorization.

2221202121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697175877 (or 697175871 counting only the distinct ones).

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

Adding to 2221202121102 its reverse (2011212021222), we get a palindrome (4232414142324).

The spelling of 2221202121102 in words is "two trillion, two hundred twenty-one billion, two hundred two million, one hundred twenty-one thousand, one hundred two".