121100022021121 has 64 divisors (see below), whose sum is σ = 143969806632960. Its totient is φ = 100413480960000.

The previous prime is 121100022021113. The next prime is 121100022021133. The reversal of 121100022021121 is 121120220001121.

It is not a de Polignac number, because 121100022021121 - 2³ = 121100022021113 is a prime.

It is a super-2 number, since 2×121100022021121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121100022021095 and 121100022021104.

It is not an unprimeable number, because it can be changed into a prime (121100022021721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20247450951 + ... + 20247456931.

It is an arithmetic number, because the mean of its divisors is an integer number (2249528228640).

Almost surely, 2^{121100022021121} is an apocalyptic number.

121100022021121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121100022021121 is a deficient number, since it is larger than the sum of its proper divisors (22869784611839).

121100022021121 is a wasteful number, since it uses less digits than its factorization.

121100022021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8698.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121100022021121 its reverse (121120220001121), we get a palindrome (242220242022242).

The spelling of 121100022021121 in words is "one hundred twenty-one trillion, one hundred billion, twenty-two million, twenty-one thousand, one hundred twenty-one".