121202211112101 has 48 divisors (see below), whose sum is σ = 203395937422080. Its totient is φ = 68110929768960.

The previous prime is 121202211112061. The next prime is 121202211112139. The reversal of 121202211112101 is 101211112202121.

It is a happy number.

121202211112101 is a `hidden beast` number, since 1 + 2 + 120 + 221 + 111 + 210 + 1 = 666.

It is not a de Polignac number, because 121202211112101 - 2²⁹ = 121201674241189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202211112201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18874221 + ... + 24467133.

It is an arithmetic number, because the mean of its divisors is an integer number (4237415362960).

Almost surely, 2^{121202211112101} is an apocalyptic number.

It is an amenable number.

121202211112101 is a deficient number, since it is larger than the sum of its proper divisors (82193726309979).

121202211112101 is a wasteful number, since it uses less digits than its factorization.

121202211112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598626 (or 5598623 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121202211112101 its reverse (101211112202121), we get a palindrome (222413323314222).

The spelling of 121202211112101 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred eleven million, one hundred twelve thousand, one hundred one".