20102201012 has 12 divisors (see below), whose sum is σ = 35186793600. Its totient is φ = 10048831416.

The previous prime is 20102200991. The next prime is 20102201027. The reversal of 20102201012 is 21010220102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20102200984 and 20102201002.

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, 547262 + ... + 582837.

It is an arithmetic number, because the mean of its divisors is an integer number (2932232800).

Almost surely, 2^20102201012 is an apocalyptic number.

It is an amenable number.

20102201012 is a deficient number, since it is larger than the sum of its proper divisors (15084592588).

20102201012 is a wasteful number, since it uses less digits than its factorization.

20102201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134550 (or 1134548 counting only the distinct ones).

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

Adding to 20102201012 its reverse (21010220102), we get a palindrome (41112421114).

It can be divided in two parts, 2010 and 2201012, that added together give a palindrome (2203022).

The spelling of 20102201012 in words is "twenty billion, one hundred two million, two hundred one thousand, twelve".