120202121011 has 4 divisors (see below), whose sum is σ = 137373852592. Its totient is φ = 103030389432.

The previous prime is 120202120943. The next prime is 120202121021. The reversal of 120202121011 is 110121202021.

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 120202121011 - 2⁹ = 120202120499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120202120982 and 120202121000.

It is not an unprimeable number, because it can be changed into a prime (120202121021) 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, 8585865780 + ... + 8585865793.

It is an arithmetic number, because the mean of its divisors is an integer number (34343463148).

Almost surely, 2^120202121011 is an apocalyptic number.

120202121011 is a deficient number, since it is larger than the sum of its proper divisors (17171731581).

120202121011 is an equidigital number, since it uses as much as digits as its factorization.

120202121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17171731580.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120202121011 its reverse (110121202021), we get a palindrome (230323323032).

The spelling of 120202121011 in words is "one hundred twenty billion, two hundred two million, one hundred twenty-one thousand, eleven".