102012012121211 has 4 divisors (see below), whose sum is σ = 102074328562752. Its totient is φ = 101949695679672.

The previous prime is 102012012121207. The next prime is 102012012121247. The reversal of 102012012121211 is 112121210210201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102012012121211 - 2² = 102012012121207 is a prime.

It is a super-2 number, since 2×102012012121211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102012012121211.

It is not an unprimeable number, because it can be changed into a prime (102012012120211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31158218315 + ... + 31158221588.

It is an arithmetic number, because the mean of its divisors is an integer number (25518582140688).

Almost surely, 2^{102012012121211} is an apocalyptic number.

102012012121211 is a deficient number, since it is larger than the sum of its proper divisors (62316441541).

102012012121211 is an equidigital number, since it uses as much as digits as its factorization.

102012012121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62316441540.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102012012121211 its reverse (112121210210201), we get a palindrome (214133222331412).

The spelling of 102012012121211 in words is "one hundred two trillion, twelve billion, twelve million, one hundred twenty-one thousand, two hundred eleven".