1222220121102 has 24 divisors (see below), whose sum is σ = 2719715045736. Its totient is φ = 396395714736.

The previous prime is 1222220121091. The next prime is 1222220121167. The reversal of 1222220121102 is 2011210222221.

It is a happy number.

1222220121102 is a `hidden beast` number, since 1 + 222 + 220 + 121 + 102 = 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 11 ways as a sum of consecutive naturals, for example, 917582008 + ... + 917583339.

It is an arithmetic number, because the mean of its divisors is an integer number (113321460239).

Almost surely, 2^{1222220121102} is an apocalyptic number.

1222220121102 is an abundant number, since it is smaller than the sum of its proper divisors (1497494924634).

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

1222220121102 is a wasteful number, since it uses less digits than its factorization.

1222220121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835165392 (or 1835165389 counting only the distinct ones).

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

Adding to 1222220121102 its reverse (2011210222221), we get a palindrome (3233430343323).

The spelling of 1222220121102 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, one hundred two".