121002202021 has 8 divisors (see below), whose sum is σ = 121941323840. Its totient is φ = 120064060512.

The previous prime is 121002202019. The next prime is 121002202063. The reversal of 121002202021 is 120202200121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121002202021 - 2¹ = 121002202019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121002201992 and 121002202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002202121) 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 7 ways as a sum of consecutive naturals, for example, 3721 + ... + 491953.

It is an arithmetic number, because the mean of its divisors is an integer number (15242665480).

Almost surely, 2^121002202021 is an apocalyptic number.

It is an amenable number.

121002202021 is a deficient number, since it is larger than the sum of its proper divisors (939121819).

121002202021 is a wasteful number, since it uses less digits than its factorization.

121002202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490155.

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

Adding to 121002202021 its reverse (120202200121), we get a palindrome (241204402142).

The spelling of 121002202021 in words is "one hundred twenty-one billion, two million, two hundred two thousand, twenty-one".