102121211005 has 8 divisors (see below), whose sum is σ = 133685949024. Its totient is φ = 74269971600.

The previous prime is 102121210979. The next prime is 102121211033. The reversal of 102121211005 is 500112121201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-102121211005 is a prime.

It is a super-2 number, since 2×102121211005² (a number of 23 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 102121211005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928374591 + ... + 928374700.

It is an arithmetic number, because the mean of its divisors is an integer number (16710743628).

Almost surely, 2^102121211005 is an apocalyptic number.

It is an amenable number.

102121211005 is a deficient number, since it is larger than the sum of its proper divisors (31564738019).

102121211005 is a wasteful number, since it uses less digits than its factorization.

102121211005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856749307.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 102121211005 its reverse (500112121201), we get a palindrome (602233332206).

The spelling of 102121211005 in words is "one hundred two billion, one hundred twenty-one million, two hundred eleven thousand, five".