121022220001 has 4 divisors (see below), whose sum is σ = 121264750000. Its totient is φ = 120779690004.

The previous prime is 121022219999. The next prime is 121022220031. The reversal of 121022220001 is 100022220121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100022220121 = 47 ⋅2128132343.

It is a cyclic number.

It is not a de Polignac number, because 121022220001 - 2¹ = 121022219999 is a prime.

It is a super-5 number, since 5×121022220001⁵ (a number of 57 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121022220031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121264251 + ... + 121265248.

It is an arithmetic number, because the mean of its divisors is an integer number (30316187500).

Almost surely, 2^121022220001 is an apocalyptic number.

It is an amenable number.

121022220001 is a deficient number, since it is larger than the sum of its proper divisors (242529999).

121022220001 is an equidigital number, since it uses as much as digits as its factorization.

121022220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242529998.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121022220001 its reverse (100022220121), we get a palindrome (221044440122).

The spelling of 121022220001 in words is "one hundred twenty-one billion, twenty-two million, two hundred twenty thousand, one".