210121020201212 has 12 divisors (see below), whose sum is σ = 389341890372960. Its totient is φ = 98880480094656.

The previous prime is 210121020201167. The next prime is 210121020201221. The reversal of 210121020201212 is 212102020121012.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1545007501412 + ... + 1545007501547.

It is an arithmetic number, because the mean of its divisors is an integer number (32445157531080).

Almost surely, 2^{210121020201212} is an apocalyptic number.

It is an amenable number.

210121020201212 is a deficient number, since it is larger than the sum of its proper divisors (179220870171748).

210121020201212 is a wasteful number, since it uses less digits than its factorization.

210121020201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090015002980 (or 3090015002978 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210121020201212 its reverse (212102020121012), we get a palindrome (422223040322224).

The spelling of 210121020201212 in words is "two hundred ten trillion, one hundred twenty-one billion, twenty million, two hundred one thousand, two hundred twelve".