20102012212 has 6 divisors (see below), whose sum is σ = 35178521378. Its totient is φ = 10051006104.

The previous prime is 20102012209. The next prime is 20102012233. The reversal of 20102012212 is 21221020102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19386663696 + 715348516 = 139236^2 + 26746^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20102012192 and 20102012201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2512751523 + ... + 2512751530.

Almost surely, 2^20102012212 is an apocalyptic number.

It is an amenable number.

20102012212 is a deficient number, since it is larger than the sum of its proper divisors (15076509166).

20102012212 is a wasteful number, since it uses less digits than its factorization.

20102012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025503057 (or 5025503055 counting only the distinct ones).

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

Adding to 20102012212 its reverse (21221020102), we get a palindrome (41323032314).

The spelling of 20102012212 in words is "twenty billion, one hundred two million, twelve thousand, two hundred twelve".