120121211102101 has 4 divisors (see below), whose sum is σ = 131041321202304. Its totient is φ = 109201101001900.

The previous prime is 120121211102083. The next prime is 120121211102129. The reversal of 120121211102101 is 101201112121021.

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 cyclic number.

It is not a de Polignac number, because 120121211102101 - 2¹⁵ = 120121211069333 is a prime.

It is a super-2 number, since 2×120121211102101² (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 (120121211100101) 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, 5460055050085 + ... + 5460055050106.

It is an arithmetic number, because the mean of its divisors is an integer number (32760330300576).

Almost surely, 2^{120121211102101} is an apocalyptic number.

120121211102101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120121211102101 is a deficient number, since it is larger than the sum of its proper divisors (10920110100203).

120121211102101 is a wasteful number, since it uses less digits than its factorization.

120121211102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10920110100202.

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

Adding to 120121211102101 its reverse (101201112121021), we get a palindrome (221322323223122).

The spelling of 120121211102101 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred eleven million, one hundred two thousand, one hundred one".