220011101112121 has 16 divisors (see below), whose sum is σ = 241845519218688. Its totient is φ = 198482267011600.

The previous prime is 220011101112113. The next prime is 220011101112199. The reversal of 220011101112121 is 121211101110022.

It is not a de Polignac number, because 220011101112121 - 2³ = 220011101112113 is a prime.

It is a super-2 number, since 2×220011101112121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220011101112095 and 220011101112104.

It is not an unprimeable number, because it can be changed into a prime (220011101112221) 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, 475712436 + ... + 476174698.

It is an arithmetic number, because the mean of its divisors is an integer number (15115344951168).

Almost surely, 2^{220011101112121} is an apocalyptic number.

It is an amenable number.

220011101112121 is a deficient number, since it is larger than the sum of its proper divisors (21834418106567).

220011101112121 is a wasteful number, since it uses less digits than its factorization.

220011101112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792692.

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

Adding to 220011101112121 its reverse (121211101110022), we get a palindrome (341222202222143).

The spelling of 220011101112121 in words is "two hundred twenty trillion, eleven billion, one hundred one million, one hundred twelve thousand, one hundred twenty-one".