20120221222010 has 32 divisors (see below), whose sum is σ = 44574028555392. Its totient is φ = 6367718364480.

The previous prime is 20120221222001. The next prime is 20120221222099. The reversal of 20120221222010 is 1022212202102.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20120221222010.

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, 11055065696 + ... + 11055067515.

It is an arithmetic number, because the mean of its divisors is an integer number (1392938392356).

Almost surely, 2^{20120221222010} is an apocalyptic number.

20120221222010 is an abundant number, since it is smaller than the sum of its proper divisors (24453807333382).

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

20120221222010 is a wasteful number, since it uses less digits than its factorization.

20120221222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22110133238.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20120221222010 its reverse (1022212202102), we get a palindrome (21142433424112).

The spelling of 20120221222010 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-one million, two hundred twenty-two thousand, ten".