100024021961 has 2 divisors, whose sum is σ = 100024021962. Its totient is φ = 100024021960.

The previous prime is 100024021957. The next prime is 100024022011. The reversal of 100024021961 is 169120420001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90276211600 + 9747810361 = 300460^2 + 98731^2 .

It is a cyclic number.

It is not a de Polignac number, because 100024021961 - 2² = 100024021957 is a prime.

It is a super-2 number, since 2×100024021961² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100024021961.

It is not a weakly prime, because it can be changed into another prime (100024021561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50012010980 + 50012010981.

It is an arithmetic number, because the mean of its divisors is an integer number (50012010981).

Almost surely, 2^100024021961 is an apocalyptic number.

It is an amenable number.

100024021961 is a deficient number, since it is larger than the sum of its proper divisors (1).

100024021961 is an equidigital number, since it uses as much as digits as its factorization.

100024021961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 100024021961 its reverse (169120420001), we get a palindrome (269144441962).

It can be divided in two parts, 1000240 and 21961, that added together give a palindrome (1022201).

The spelling of 100024021961 in words is "one hundred billion, twenty-four million, twenty-one thousand, nine hundred sixty-one".