1220121211102 has 16 divisors (see below), whose sum is σ = 1831651742592. Its totient is φ = 609570761760.

The previous prime is 1220121211097. The next prime is 1220121211117. The reversal of 1220121211102 is 2011121210221.

It is a super-2 number, since 2×1220121211102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21222948 + ... + 21280360.

It is an arithmetic number, because the mean of its divisors is an integer number (114478233912).

Almost surely, 2^{1220121211102} is an apocalyptic number.

1220121211102 is a deficient number, since it is larger than the sum of its proper divisors (611530531490).

1220121211102 is a wasteful number, since it uses less digits than its factorization.

1220121211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65763.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1220121211102 its reverse (2011121210221), we get a palindrome (3231242421323).

The spelling of 1220121211102 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, two hundred eleven thousand, one hundred two".