121021020101 has 8 divisors (see below), whose sum is σ = 121359200160. Its totient is φ = 120682914192.

The previous prime is 121021020083. The next prime is 121021020149. The reversal of 121021020101 is 101020120121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121021020101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021020191) 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, 5525510 + ... + 5547368.

It is an arithmetic number, because the mean of its divisors is an integer number (15169900020).

Almost surely, 2^121021020101 is an apocalyptic number.

It is an amenable number.

121021020101 is a deficient number, since it is larger than the sum of its proper divisors (338180059).

121021020101 is a wasteful number, since it uses less digits than its factorization.

121021020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37075.

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

Adding to 121021020101 its reverse (101020120121), we get a palindrome (222041140222).

The spelling of 121021020101 in words is "one hundred twenty-one billion, twenty-one million, twenty thousand, one hundred one".