10100111122221 has 8 divisors (see below), whose sum is σ = 13522693730304. Its totient is φ = 6705467964480.

The previous prime is 10100111122219. The next prime is 10100111122223. The reversal of 10100111122221 is 12222111100101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10100111122219) and next prime (10100111122223).

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

It is not a de Polignac number, because 10100111122221 - 2¹ = 10100111122219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10100111122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100111122223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6984861741 + ... + 6984863186.

It is an arithmetic number, because the mean of its divisors is an integer number (1690336716288).

Almost surely, 2^{10100111122221} is an apocalyptic number.

It is an amenable number.

10100111122221 is a deficient number, since it is larger than the sum of its proper divisors (3422582608083).

10100111122221 is a wasteful number, since it uses less digits than its factorization.

10100111122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13969725171.

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

Adding to 10100111122221 its reverse (12222111100101), we get a palindrome (22322222222322).

The spelling of 10100111122221 in words is "ten trillion, one hundred billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twenty-one".