121011020202021 has 8 divisors (see below), whose sum is σ = 161348096461440. Its totient is φ = 80673978705312.

The previous prime is 121011020202019. The next prime is 121011020202029. The reversal of 121011020202021 is 120202020110121.

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

It is not a de Polignac number, because 121011020202021 - 2¹ = 121011020202019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011020202029) 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, 964036 + ... + 15586898.

It is an arithmetic number, because the mean of its divisors is an integer number (20168512057680).

Almost surely, 2^{121011020202021} is an apocalyptic number.

It is an amenable number.

121011020202021 is a deficient number, since it is larger than the sum of its proper divisors (40337076259419).

121011020202021 is a wasteful number, since it uses less digits than its factorization.

121011020202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17381355.

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

Adding to 121011020202021 its reverse (120202020110121), we get a palindrome (241213040312142).

The spelling of 121011020202021 in words is "one hundred twenty-one trillion, eleven billion, twenty million, two hundred two thousand, twenty-one".