10212111002121 has 16 divisors (see below), whose sum is σ = 15582716857344. Its totient is φ = 5827465180944.

The previous prime is 10212111002111. The next prime is 10212111002123. The reversal of 10212111002121 is 12120011121201.

It is a happy number.

It is not a de Polignac number, because 10212111002121 - 2⁵ = 10212111002089 is a prime.

It is a super-2 number, since 2×10212111002121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10212111002121.

It is not an unprimeable number, because it can be changed into a prime (10212111002123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334435215 + ... + 334465748.

It is an arithmetic number, because the mean of its divisors is an integer number (973919803584).

Almost surely, 2^{10212111002121} is an apocalyptic number.

It is an amenable number.

10212111002121 is a deficient number, since it is larger than the sum of its proper divisors (5370605855223).

10212111002121 is an equidigital number, since it uses as much as digits as its factorization.

10212111002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668901700.

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

Adding to 10212111002121 its reverse (12120011121201), we get a palindrome (22332122123322).

The spelling of 10212111002121 in words is "ten trillion, two hundred twelve billion, one hundred eleven million, two thousand, one hundred twenty-one".