120021021101 has 4 divisors (see below), whose sum is σ = 120025168032. Its totient is φ = 120016874172.

The previous prime is 120021021077. The next prime is 120021021137. The reversal of 120021021101 is 101120120021.

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 a de Polignac number, because none of the positive numbers 2^k-120021021101 is a prime.

It is a super-2 number, since 2×120021021101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021021151) 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, 2029745 + ... + 2088038.

It is an arithmetic number, because the mean of its divisors is an integer number (30006292008).

Almost surely, 2^120021021101 is an apocalyptic number.

It is an amenable number.

120021021101 is a deficient number, since it is larger than the sum of its proper divisors (4146931).

120021021101 is an equidigital number, since it uses as much as digits as its factorization.

120021021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146930.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120021021101 its reverse (101120120021), we get a palindrome (221141141122).

The spelling of 120021021101 in words is "one hundred twenty billion, twenty-one million, twenty-one thousand, one hundred one".