121000000022 has 32 divisors (see below), whose sum is σ = 201400248960. Its totient is φ = 54055897920.

The previous prime is 121000000021. The next prime is 121000000067. The reversal of 121000000022 is 220000000121.

It is a junction number, because it is equal to n+sod(n) for n = 120999999946 and 121000000009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000000021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8810453 + ... + 8824175.

It is an arithmetic number, because the mean of its divisors is an integer number (6293757780).

Almost surely, 2^121000000022 is an apocalyptic number.

121000000022 is a deficient number, since it is larger than the sum of its proper divisors (80400248938).

121000000022 is a wasteful number, since it uses less digits than its factorization.

121000000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20588.

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

Adding to 121000000022 its reverse (220000000121), we get a palindrome (341000000143).

Subtracting 121000000022 from its reverse (220000000121), we obtain a palindrome (99000000099).

The spelling of 121000000022 in words is "one hundred twenty-one billion, twenty-two", and thus it is an aban number.