212122220102 has 16 divisors (see below), whose sum is σ = 342667478160. Its totient is φ = 97900132512.

The previous prime is 212122220053. The next prime is 212122220119. The reversal of 212122220102 is 201022221212.

It is a happy number.

It is a super-2 number, since 2×212122220102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1368653 + ... + 1515735.

It is an arithmetic number, because the mean of its divisors is an integer number (21416717385).

Almost surely, 2^212122220102 is an apocalyptic number.

212122220102 is a deficient number, since it is larger than the sum of its proper divisors (130545258058).

212122220102 is a wasteful number, since it uses less digits than its factorization.

212122220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202567.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212122220102 its reverse (201022221212), we get a palindrome (413144441314).

The spelling of 212122220102 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred twenty thousand, one hundred two".