20012212010 has 24 divisors (see below), whose sum is σ = 41903122500. Its totient is φ = 6861329664.

The previous prime is 20012212009. The next prime is 20012212067. The reversal of 20012212010 is 1021221002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16225409641 + 3786802369 = 127379^2 + 61537^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20012211982 and 20012212000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20420135 + ... + 20421114.

Almost surely, 2^20012212010 is an apocalyptic number.

20012212010 is an abundant number, since it is smaller than the sum of its proper divisors (21890910490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20012212010 is a wasteful number, since it uses less digits than its factorization.

20012212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40841270 (or 40841263 counting only the distinct ones).

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

Adding to 20012212010 its reverse (1021221002), we get a palindrome (21033433012).

The spelling of 20012212010 in words is "twenty billion, twelve million, two hundred twelve thousand, ten".