21222100102 has 8 divisors (see below), whose sum is σ = 36380743056. Its totient is φ = 9095185752.

The previous prime is 21222100091. The next prime is 21222100117. The reversal of 21222100102 is 20100122212.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757932133 + ... + 757932160.

It is an arithmetic number, because the mean of its divisors is an integer number (4547592882).

Almost surely, 2^21222100102 is an apocalyptic number.

21222100102 is a deficient number, since it is larger than the sum of its proper divisors (15158642954).

21222100102 is a wasteful number, since it uses less digits than its factorization.

21222100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515864302.

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

Adding to 21222100102 its reverse (20100122212), we get a palindrome (41322222314).

The spelling of 21222100102 in words is "twenty-one billion, two hundred twenty-two million, one hundred thousand, one hundred two".