100121111002 has 64 divisors (see below), whose sum is σ = 173448576000. Its totient is φ = 42867377280.

The previous prime is 100121110993. The next prime is 100121111011. The reversal of 100121111002 is 200111121001.

It is an interprime number because it is at equal distance from previous prime (100121110993) and next prime (100121111011).

It is a self number, because there is not a number n which added to its sum of digits gives 100121111002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71565499 + ... + 71566897.

It is an arithmetic number, because the mean of its divisors is an integer number (2710134000).

Almost surely, 2^100121111002 is an apocalyptic number.

100121111002 is a deficient number, since it is larger than the sum of its proper divisors (73327464998).

100121111002 is a wasteful number, since it uses less digits than its factorization.

100121111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100121111002 its reverse (200111121001), we get a palindrome (300232232003).

Subtracting 100121111002 from its reverse (200111121001), we obtain a palindrome (99990009999).

The spelling of 100121111002 in words is "one hundred billion, one hundred twenty-one million, one hundred eleven thousand, two".