121000221102101 has 4 divisors (see below), whose sum is σ = 132000241202304. Its totient is φ = 110000201001900.

The previous prime is 121000221102053. The next prime is 121000221102107. The reversal of 121000221102101 is 101201122000121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-121000221102101 is a prime.

It is a super-2 number, since 2×121000221102101² (a number of 29 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 (121000221102107) 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, 5500010050085 + ... + 5500010050106.

It is an arithmetic number, because the mean of its divisors is an integer number (33000060300576).

Almost surely, 2^{121000221102101} is an apocalyptic number.

121000221102101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121000221102101 is a deficient number, since it is larger than the sum of its proper divisors (11000020100203).

121000221102101 is a wasteful number, since it uses less digits than its factorization.

121000221102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11000020100202.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121000221102101 its reverse (101201122000121), we get a palindrome (222201343102222).

The spelling of 121000221102101 in words is "one hundred twenty-one trillion, two hundred twenty-one million, one hundred two thousand, one hundred one".