121101021021 has 8 divisors (see below), whose sum is σ = 161616577024. Its totient is φ = 80659739520.

The previous prime is 121101021011. The next prime is 121101021029. The reversal of 121101021021 is 120120101121.

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

It is not a de Polignac number, because 121101021021 - 2⁷ = 121101020893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121101020988 and 121101021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101021029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18564820 + ... + 18571341.

It is an arithmetic number, because the mean of its divisors is an integer number (20202072128).

Almost surely, 2^121101021021 is an apocalyptic number.

It is an amenable number.

121101021021 is a deficient number, since it is larger than the sum of its proper divisors (40515556003).

121101021021 is a wasteful number, since it uses less digits than its factorization.

121101021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37137251.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121101021021 its reverse (120120101121), we get a palindrome (241221122142).

The spelling of 121101021021 in words is "one hundred twenty-one billion, one hundred one million, twenty-one thousand, twenty-one".