220121011010 has 32 divisors (see below), whose sum is σ = 410258165760. Its totient is φ = 84933922752.

The previous prime is 220121011003. The next prime is 220121011069. The reversal of 220121011010 is 10110121022.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220121010982 and 220121011000.

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, 33914 + ... + 664373.

It is an arithmetic number, because the mean of its divisors is an integer number (12820567680).

Almost surely, 2^220121011010 is an apocalyptic number.

220121011010 is a deficient number, since it is larger than the sum of its proper divisors (190137154750).

220121011010 is a wasteful number, since it uses less digits than its factorization.

220121011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699410.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 220121011010 its reverse (10110121022), we get a palindrome (230231132032).

The spelling of 220121011010 in words is "two hundred twenty billion, one hundred twenty-one million, eleven thousand, ten".