220121011011 has 16 divisors (see below), whose sum is σ = 337027386240. Its totient is φ = 126385269120.

The previous prime is 220121011003. The next prime is 220121011069. The reversal of 220121011011 is 110110121022.

It is not a de Polignac number, because 220121011011 - 2³ = 220121011003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220121011711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175534470 + ... + 175535723.

It is an arithmetic number, because the mean of its divisors is an integer number (21064211640).

Almost surely, 2^220121011011 is an apocalyptic number.

220121011011 is a deficient number, since it is larger than the sum of its proper divisors (116906375229).

220121011011 is a wasteful number, since it uses less digits than its factorization.

220121011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351070226.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 220121011011 its reverse (110110121022), we get a palindrome (330231132033).

The spelling of 220121011011 in words is "two hundred twenty billion, one hundred twenty-one million, eleven thousand, eleven".