101002222021 has 4 divisors (see below), whose sum is σ = 101386261152. Its totient is φ = 100618182892.

The previous prime is 101002222007. The next prime is 101002222031. The reversal of 101002222021 is 120222200101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120222200101 = 11827 ⋅10165063.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101002222021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101002221992 and 101002222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101002222031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192019171 + ... + 192019696.

It is an arithmetic number, because the mean of its divisors is an integer number (25346565288).

Almost surely, 2^101002222021 is an apocalyptic number.

It is an amenable number.

101002222021 is a deficient number, since it is larger than the sum of its proper divisors (384039131).

101002222021 is an equidigital number, since it uses as much as digits as its factorization.

101002222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384039130.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 101002222021 its reverse (120222200101), we get a palindrome (221224422122).

The spelling of 101002222021 in words is "one hundred one billion, two million, two hundred twenty-two thousand, twenty-one".