120021001211 has 4 divisors (see below), whose sum is σ = 120044507592. Its totient is φ = 119997494832.

The previous prime is 120021001193. The next prime is 120021001277. The reversal of 120021001211 is 112100120021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112100120021 = 218549 ⋅512929.

It is a cyclic number.

It is not a de Polignac number, because 120021001211 - 2³⁴ = 102841132027 is a prime.

It is a super-3 number, since 3×120021001211³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021001192 and 120021001201.

It is not an unprimeable number, because it can be changed into a prime (120021601211) 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, 11745530 + ... + 11755743.

It is an arithmetic number, because the mean of its divisors is an integer number (30011126898).

Almost surely, 2^120021001211 is an apocalyptic number.

120021001211 is a deficient number, since it is larger than the sum of its proper divisors (23506381).

120021001211 is an equidigital number, since it uses as much as digits as its factorization.

120021001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23506380.

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

Adding to 120021001211 its reverse (112100120021), we get a palindrome (232121121232).

The spelling of 120021001211 in words is "one hundred twenty billion, twenty-one million, one thousand, two hundred eleven".