1221102101202 has 16 divisors (see below), whose sum is σ = 2442246161472. Its totient is φ = 407027040560.

The previous prime is 1221102101161. The next prime is 1221102101221. The reversal of 1221102101202 is 2021012011221.

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, 1363449 + ... + 2073932.

It is an arithmetic number, because the mean of its divisors is an integer number (152640385092).

Almost surely, 2^{1221102101202} is an apocalyptic number.

1221102101202 is an abundant number, since it is smaller than the sum of its proper divisors (1221144060270).

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

1221102101202 is a wasteful number, since it uses less digits than its factorization.

1221102101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496593.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1221102101202 its reverse (2021012011221), we get a palindrome (3242114112423).

The spelling of 1221102101202 in words is "one trillion, two hundred twenty-one billion, one hundred two million, one hundred one thousand, two hundred two".