20010012212 has 12 divisors (see below), whose sum is σ = 35071151556. Its totient is φ = 9989683200.

The previous prime is 20010012173. The next prime is 20010012221. The reversal of 20010012212 is 21221001002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3503929636 + 16506082576 = 59194^2 + 128476^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20010012193 and 20010012202.

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, 3827789 + ... + 3833012.

It is an arithmetic number, because the mean of its divisors is an integer number (2922595963).

Almost surely, 2^20010012212 is an apocalyptic number.

It is an amenable number.

20010012212 is a deficient number, since it is larger than the sum of its proper divisors (15061139344).

20010012212 is a wasteful number, since it uses less digits than its factorization.

20010012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7661458 (or 7661456 counting only the distinct ones).

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

Adding to 20010012212 its reverse (21221001002), we get a palindrome (41231013214).

The spelling of 20010012212 in words is "twenty billion, ten million, twelve thousand, two hundred twelve".