20120221000010 has 32 divisors (see below), whose sum is σ = 36249378575760. Its totient is φ = 8040762114048.

The previous prime is 20120220999941. The next prime is 20120221000037. The reversal of 20120221000010 is 1000012202102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 827719663681 + 19292501336329 = 909791^2 + 4392323^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20120220999955 and 20120221000000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58734506 + ... + 59076074.

Almost surely, 2^{20120221000010} is an apocalyptic number.

20120221000010 is a deficient number, since it is larger than the sum of its proper divisors (16129157575750).

20120221000010 is a wasteful number, since it uses less digits than its factorization.

20120221000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346922.

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

Adding to 20120221000010 its reverse (1000012202102), we get a palindrome (21120233202112).

The spelling of 20120221000010 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-one million, ten", and thus it is an aban number.