1221202211102 has 32 divisors (see below), whose sum is σ = 1861798629600. Its totient is φ = 600706713600.

The previous prime is 1221202211087. The next prime is 1221202211129. The reversal of 1221202211102 is 2011122021221.

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, 14096174 + ... + 14182542.

It is an arithmetic number, because the mean of its divisors is an integer number (58181207175).

Almost surely, 2^{1221202211102} is an apocalyptic number.

1221202211102 is a deficient number, since it is larger than the sum of its proper divisors (640596418498).

1221202211102 is a wasteful number, since it uses less digits than its factorization.

1221202211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86972.

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

Adding to 1221202211102 its reverse (2011122021221), we get a palindrome (3232324232323).

The spelling of 1221202211102 in words is "one trillion, two hundred twenty-one billion, two hundred two million, two hundred eleven thousand, one hundred two".