20120221012210 has 16 divisors (see below), whose sum is σ = 39508797624192. Its totient is φ = 7316444004400.

The previous prime is 20120221012207. The next prime is 20120221012231. The reversal of 20120221012210 is 1221012202102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91455549946 + ... + 91455550165.

It is an arithmetic number, because the mean of its divisors is an integer number (2469299851512).

Almost surely, 2^{20120221012210} is an apocalyptic number.

20120221012210 is a deficient number, since it is larger than the sum of its proper divisors (19388576611982).

20120221012210 is a wasteful number, since it uses less digits than its factorization.

20120221012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182911100129.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20120221012210 its reverse (1221012202102), we get a palindrome (21341233214312).

The spelling of 20120221012210 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-one million, twelve thousand, two hundred ten".