121202021101 has 8 divisors (see below), whose sum is σ = 146664630720. Its totient is φ = 97776420288.

The previous prime is 121202021089. The next prime is 121202021113. The reversal of 121202021101 is 101120202121.

It is an interprime number because it is at equal distance from previous prime (121202021089) and next prime (121202021113).

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-121202021101 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 (121202021701) 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, 509252071 + ... + 509252308.

It is an arithmetic number, because the mean of its divisors is an integer number (18333078840).

Almost surely, 2^121202021101 is an apocalyptic number.

It is an amenable number.

121202021101 is a deficient number, since it is larger than the sum of its proper divisors (25462609619).

121202021101 is a wasteful number, since it uses less digits than its factorization.

121202021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018504403.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121202021101 its reverse (101120202121), we get a palindrome (222322223222).

The spelling of 121202021101 in words is "one hundred twenty-one billion, two hundred two million, twenty-one thousand, one hundred one".