121012101101 has 4 divisors (see below), whose sum is σ = 123963615804. Its totient is φ = 118060586400.

The previous prime is 121012101083. The next prime is 121012101139. The reversal of 121012101101 is 101101210121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101101210121 = 5077 ⋅19913573.

It can be written as a sum of positive squares in 2 ways, for example, as 61219625476 + 59792475625 = 247426^2 + 244525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121012101101 is a prime.

It is a super-2 number, since 2×121012101101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012101191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1475757290 + ... + 1475757371.

It is an arithmetic number, because the mean of its divisors is an integer number (30990903951).

Almost surely, 2^121012101101 is an apocalyptic number.

It is an amenable number.

121012101101 is a deficient number, since it is larger than the sum of its proper divisors (2951514703).

121012101101 is an equidigital number, since it uses as much as digits as its factorization.

121012101101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951514702.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121012101101 its reverse (101101210121), we get a palindrome (222113311222).

The spelling of 121012101101 in words is "one hundred twenty-one billion, twelve million, one hundred one thousand, one hundred one".