122120001011 has 4 divisors (see below), whose sum is σ = 122160400992. Its totient is φ = 122079601032.

The previous prime is 122120000921. The next prime is 122120001013. The reversal of 122120001011 is 110100021221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122120001011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122120000983 and 122120001001.

It is not an unprimeable number, because it can be changed into a prime (122120001013) 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, 20195456 + ... + 20201501.

It is an arithmetic number, because the mean of its divisors is an integer number (30540100248).

Almost surely, 2^122120001011 is an apocalyptic number.

122120001011 is a deficient number, since it is larger than the sum of its proper divisors (40399981).

122120001011 is an equidigital number, since it uses as much as digits as its factorization.

122120001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40399980.

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

Adding to 122120001011 its reverse (110100021221), we get a palindrome (232220022232).

The spelling of 122120001011 in words is "one hundred twenty-two billion, one hundred twenty million, one thousand, eleven".