100021143044 has 6 divisors (see below), whose sum is σ = 175037000334. Its totient is φ = 50010571520.

The previous prime is 100021143041. The next prime is 100021143107. The reversal of 100021143044 is 440341120001.

It can be written as a sum of positive squares in only one way, i.e., 99390128644 + 631014400 = 315262^2 + 25120^2 .

It is not an unprimeable number, because it can be changed into a prime (100021143041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12502642877 + ... + 12502642884.

It is an arithmetic number, because the mean of its divisors is an integer number (29172833389).

Almost surely, 2^100021143044 is an apocalyptic number.

It is an amenable number.

100021143044 is a deficient number, since it is larger than the sum of its proper divisors (75015857290).

100021143044 is a wasteful number, since it uses less digits than its factorization.

100021143044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25005285765 (or 25005285763 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 100021143044 its reverse (440341120001), we get a palindrome (540362263045).

The spelling of 100021143044 in words is "one hundred billion, twenty-one million, one hundred forty-three thousand, forty-four".