1222011100121 has 16 divisors (see below), whose sum is σ = 1400689290240. Its totient is φ = 1044362927040.

The previous prime is 1222011100087. The next prime is 1222011100157. The reversal of 1222011100121 is 1210011102221.

It is a cyclic number.

It is not a de Polignac number, because 1222011100121 - 2³⁸ = 947133193177 is a prime.

It is a super-2 number, since 2×1222011100121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222011100096 and 1222011100105.

It is not an unprimeable number, because it can be changed into a prime (1222011100421) 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, 3805595 + ... + 4114191.

It is an arithmetic number, because the mean of its divisors is an integer number (87543080640).

Almost surely, 2^{1222011100121} is an apocalyptic number.

It is an amenable number.

1222011100121 is a deficient number, since it is larger than the sum of its proper divisors (178678190119).

1222011100121 is a wasteful number, since it uses less digits than its factorization.

1222011100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310264.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1222011100121 its reverse (1210011102221), we get a palindrome (2432022202342).

The spelling of 1222011100121 in words is "one trillion, two hundred twenty-two billion, eleven million, one hundred thousand, one hundred twenty-one".