100220021021 has 8 divisors (see below), whose sum is σ = 101290996800. Its totient is φ = 99149816448.

The previous prime is 100220020963. The next prime is 100220021023. The reversal of 100220021021 is 120120022001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100220021021 is a prime.

It is a super-2 number, since 2×100220021021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100220020993 and 100220021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220021023) 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, 70400 + ... + 453206.

It is an arithmetic number, because the mean of its divisors is an integer number (12661374600).

Almost surely, 2^100220021021 is an apocalyptic number.

It is an amenable number.

100220021021 is a deficient number, since it is larger than the sum of its proper divisors (1070975779).

100220021021 is an equidigital number, since it uses as much as digits as its factorization.

100220021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385603.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100220021021 its reverse (120120022001), we get a palindrome (220340043022).

The spelling of 100220021021 in words is "one hundred billion, two hundred twenty million, twenty-one thousand, twenty-one".