10211210121210 has 96 divisors (see below), whose sum is σ = 28509317539200. Its totient is φ = 2333885597568.

The previous prime is 10211210121163. The next prime is 10211210121223. The reversal of 10211210121210 is 1212101211201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10211210121210.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35145616 + ... + 35434964.

It is an arithmetic number, because the mean of its divisors is an integer number (296972057700).

Almost surely, 2^{10211210121210} is an apocalyptic number.

10211210121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10211210121210 is an abundant number, since it is smaller than the sum of its proper divisors (18298107417990).

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

10211210121210 is a wasteful number, since it uses less digits than its factorization.

10211210121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313380 (or 313373 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10211210121210 its reverse (1212101211201), we get a palindrome (11423311332411).

The spelling of 10211210121210 in words is "ten trillion, two hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, two hundred ten".