121012211022101 has 16 divisors (see below), whose sum is σ = 138441502176768. Its totient is φ = 103618427094000.

The previous prime is 121012211022061. The next prime is 121012211022107. The reversal of 121012211022101 is 101220112210121.

It is a de Polignac number, because none of the positive numbers 2^k-121012211022101 is a prime.

It is a super-2 number, since 2×121012211022101² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121012211022101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012211022107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27551846 + ... + 31640616.

It is an arithmetic number, because the mean of its divisors is an integer number (8652593886048).

Almost surely, 2^{121012211022101} is an apocalyptic number.

It is an amenable number.

121012211022101 is a deficient number, since it is larger than the sum of its proper divisors (17429291154667).

121012211022101 is a wasteful number, since it uses less digits than its factorization.

121012211022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093112.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121012211022101 its reverse (101220112210121), we get a palindrome (222232323232222).

The spelling of 121012211022101 in words is "one hundred twenty-one trillion, twelve billion, two hundred eleven million, twenty-two thousand, one hundred one".