210121202012 has 6 divisors (see below), whose sum is σ = 367712103528. Its totient is φ = 105060601004.

The previous prime is 210121202003. The next prime is 210121202017. The reversal of 210121202012 is 210202121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121202017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26265150248 + ... + 26265150255.

It is an arithmetic number, because the mean of its divisors is an integer number (61285350588).

Almost surely, 2^210121202012 is an apocalyptic number.

It is an amenable number.

210121202012 is a deficient number, since it is larger than the sum of its proper divisors (157590901516).

210121202012 is a wasteful number, since it uses less digits than its factorization.

210121202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52530300507 (or 52530300505 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210121202012 its reverse (210202121012), we get a palindrome (420323323024).

The spelling of 210121202012 in words is "two hundred ten billion, one hundred twenty-one million, two hundred two thousand, twelve".