1221012112102 has 32 divisors (see below), whose sum is σ = 1920029215104. Its totient is φ = 581701243200.

The previous prime is 1221012112081. The next prime is 1221012112129. The reversal of 1221012112102 is 2012112101221.

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, 58842093 + ... + 58862839.

It is an arithmetic number, because the mean of its divisors is an integer number (60000912972).

Almost surely, 2^{1221012112102} is an apocalyptic number.

1221012112102 is a deficient number, since it is larger than the sum of its proper divisors (699017103002).

1221012112102 is a wasteful number, since it uses less digits than its factorization.

1221012112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37524.

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

Adding to 1221012112102 its reverse (2012112101221), we get a palindrome (3233124213323).

The spelling of 1221012112102 in words is "one trillion, two hundred twenty-one billion, twelve million, one hundred twelve thousand, one hundred two".