210121272121012 has 48 divisors (see below), whose sum is σ = 420443801608320. Its totient is φ = 90008856000000.

The previous prime is 210121272121003. The next prime is 210121272121037.

It is a happy number.

210121272121012 is nontrivially palindromic in base 10.

It is an alternating number because its digits alternate between even and odd.

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, 588101439 + ... + 588458617.

It is an arithmetic number, because the mean of its divisors is an integer number (8759245866840).

Almost surely, 2^{210121272121012} is an apocalyptic number.

It is an amenable number.

210121272121012 is an abundant number, since it is smaller than the sum of its proper divisors (210322529487308).

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

210121272121012 is a wasteful number, since it uses less digits than its factorization.

210121272121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367192 (or 367190 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 25.

The spelling of 210121272121012 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred seventy-two million, one hundred twenty-one thousand, twelve".