1211202121002 has 16 divisors (see below), whose sum is σ = 2430193326912. Its totient is φ = 402435859520.

The previous prime is 1211202120901. The next prime is 1211202121039. The reversal of 1211202121002 is 2001212021121.

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, 324543183 + ... + 324546914.

It is an arithmetic number, because the mean of its divisors is an integer number (151887082932).

Almost surely, 2^{1211202121002} is an apocalyptic number.

1211202121002 is an abundant number, since it is smaller than the sum of its proper divisors (1218991205910).

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

1211202121002 is a wasteful number, since it uses less digits than its factorization.

1211202121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649090413.

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

Adding to 1211202121002 its reverse (2001212021121), we get a palindrome (3212414142123).

The spelling of 1211202121002 in words is "one trillion, two hundred eleven billion, two hundred two million, one hundred twenty-one thousand, two".