20101022212 has 12 divisors (see below), whose sum is σ = 35177815260. Its totient is φ = 10050217856.

The previous prime is 20101022191. The next prime is 20101022233. The reversal of 20101022212 is 21222010102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20101022191) and next prime (20101022233).

It can be written as a sum of positive squares in 2 ways, for example, as 10423184836 + 9677837376 = 102094^2 + 98376^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20101022192 and 20101022201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172464 + ... + 264472.

It is an arithmetic number, because the mean of its divisors is an integer number (2931484605).

Almost surely, 2^20101022212 is an apocalyptic number.

It is an amenable number.

20101022212 is a deficient number, since it is larger than the sum of its proper divisors (15076793048).

20101022212 is a wasteful number, since it uses less digits than its factorization.

20101022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146630 (or 146628 counting only the distinct ones).

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

Adding to 20101022212 its reverse (21222010102), we get a palindrome (41323032314).

The spelling of 20101022212 in words is "twenty billion, one hundred one million, twenty-two thousand, two hundred twelve".