202121121211002 has 24 divisors (see below), whose sum is σ = 500490395379936. Its totient is φ = 57748891774536.

The previous prime is 202121121210997. The next prime is 202121121211157. The reversal of 202121121211002 is 200112121121202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 802067941188 + ... + 802067941439.

It is an arithmetic number, because the mean of its divisors is an integer number (20853766474164).

Almost surely, 2^{202121121211002} is an apocalyptic number.

202121121211002 is an abundant number, since it is smaller than the sum of its proper divisors (298369274168934).

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

202121121211002 is a wasteful number, since it uses less digits than its factorization.

202121121211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604135882642 (or 1604135882639 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202121121211002 its reverse (200112121121202), we get a palindrome (402233242332204).

The spelling of 202121121211002 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, two".