22021202101 has 4 divisors (see below), whose sum is σ = 22115713932. Its totient is φ = 21926690272.

The previous prime is 22021202057. The next prime is 22021202107. The reversal of 22021202101 is 10120212022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7119140625 + 14902061476 = 84375^2 + 122074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021202101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021202107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47255566 + ... + 47256031.

It is an arithmetic number, because the mean of its divisors is an integer number (5528928483).

Almost surely, 2^22021202101 is an apocalyptic number.

It is an amenable number.

22021202101 is a deficient number, since it is larger than the sum of its proper divisors (94511831).

22021202101 is an equidigital number, since it uses as much as digits as its factorization.

22021202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94511830.

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

Adding to 22021202101 its reverse (10120212022), we get a palindrome (32141414123).

The spelling of 22021202101 in words is "twenty-two billion, twenty-one million, two hundred two thousand, one hundred one".