121001221041 has 4 divisors (see below), whose sum is σ = 161334961392. Its totient is φ = 80667480692.

The previous prime is 121001221037. The next prime is 121001221051. The reversal of 121001221041 is 140122100121.

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.

It is a cyclic number.

It is not a de Polignac number, because 121001221041 - 2² = 121001221037 is a prime.

It is a super-2 number, since 2×121001221041² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121001221041.

It is not an unprimeable number, because it can be changed into a prime (121001221021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20166870171 + ... + 20166870176.

It is an arithmetic number, because the mean of its divisors is an integer number (40333740348).

Almost surely, 2^121001221041 is an apocalyptic number.

It is an amenable number.

121001221041 is a deficient number, since it is larger than the sum of its proper divisors (40333740351).

121001221041 is an equidigital number, since it uses as much as digits as its factorization.

121001221041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40333740350.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121001221041 its reverse (140122100121), we get a palindrome (261123321162).

The spelling of 121001221041 in words is "one hundred twenty-one billion, one million, two hundred twenty-one thousand, forty-one".