100021111002145 has 32 divisors (see below), whose sum is σ = 125499600237312. Its totient is φ = 76381625244672.

The previous prime is 100021111002143. The next prime is 100021111002149. The reversal of 100021111002145 is 541200111120001.

It is a cyclic number.

It is not a de Polignac number, because 100021111002145 - 2¹ = 100021111002143 is a prime.

It is a super-2 number, since 2×100021111002145² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100021111002143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 480634957 + ... + 480843013.

It is an arithmetic number, because the mean of its divisors is an integer number (3921862507416).

Almost surely, 2^{100021111002145} is an apocalyptic number.

It is an amenable number.

100021111002145 is a deficient number, since it is larger than the sum of its proper divisors (25478489235167).

100021111002145 is a wasteful number, since it uses less digits than its factorization.

100021111002145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216601.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 100021111002145 its reverse (541200111120001), we get a palindrome (641221222122146).

The spelling of 100021111002145 in words is "one hundred trillion, twenty-one billion, one hundred eleven million, two thousand, one hundred forty-five".