121022101001 has 4 divisors (see below), whose sum is σ = 123973859604. Its totient is φ = 118070342400.

The previous prime is 121022100973. The next prime is 121022101003. The reversal of 121022101001 is 100101220121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100101220121 = 7 ⋅14300174303.

It can be written as a sum of positive squares in 2 ways, for example, as 57636485776 + 63385615225 = 240076^2 + 251765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121022101001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121022101003) 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, 1475879240 + ... + 1475879321.

It is an arithmetic number, because the mean of its divisors is an integer number (30993464901).

Almost surely, 2^121022101001 is an apocalyptic number.

It is an amenable number.

121022101001 is a deficient number, since it is larger than the sum of its proper divisors (2951758603).

121022101001 is an equidigital number, since it uses as much as digits as its factorization.

121022101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951758602.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121022101001 its reverse (100101220121), we get a palindrome (221123321122).

The spelling of 121022101001 in words is "one hundred twenty-one billion, twenty-two million, one hundred one thousand, one".