2120022011 has 4 divisors (see below), whose sum is σ = 2123172792. Its totient is φ = 2116871232.

The previous prime is 2120021989. The next prime is 2120022013. The reversal of 2120022011 is 1102200212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2120022011 - 2⁶ = 2120021947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120021983 and 2120022001.

It is not an unprimeable number, because it can be changed into a prime (2120022013) 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, 1574381 + ... + 1575726.

It is an arithmetic number, because the mean of its divisors is an integer number (530793198).

Almost surely, 2^2120022011 is an apocalyptic number.

2120022011 is a deficient number, since it is larger than the sum of its proper divisors (3150781).

2120022011 is an equidigital number, since it uses as much as digits as its factorization.

2120022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150780.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2120022011 is about 46043.6967564508. The cubic root of 2120022011 is about 1284.6361036133.

Adding to 2120022011 its reverse (1102200212), we get a palindrome (3222222223).

The spelling of 2120022011 in words is "two billion, one hundred twenty million, twenty-two thousand, eleven".