221010100022 has 4 divisors (see below), whose sum is σ = 331515150036. Its totient is φ = 110505050010.

The previous prime is 221010100021. The next prime is 221010100043. The reversal of 221010100022 is 220001010122.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 221010099976 and 221010100012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221010100021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55252525004 + ... + 55252525007.

It is an arithmetic number, because the mean of its divisors is an integer number (82878787509).

Almost surely, 2^221010100022 is an apocalyptic number.

221010100022 is a deficient number, since it is larger than the sum of its proper divisors (110505050014).

221010100022 is a wasteful number, since it uses less digits than its factorization.

221010100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110505050013.

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

Adding to 221010100022 its reverse (220001010122), we get a palindrome (441011110144).

The spelling of 221010100022 in words is "two hundred twenty-one billion, ten million, one hundred thousand, twenty-two".