121020002011 has 4 divisors (see below), whose sum is σ = 121164246000. Its totient is φ = 120875758024.

The previous prime is 121020002009. The next prime is 121020002021. The reversal of 121020002011 is 110200020121.

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 121020002011 - 2¹ = 121020002009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121020002021) 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, 72120736 + ... + 72122413.

It is an arithmetic number, because the mean of its divisors is an integer number (30291061500).

Almost surely, 2^121020002011 is an apocalyptic number.

121020002011 is a deficient number, since it is larger than the sum of its proper divisors (144243989).

121020002011 is an equidigital number, since it uses as much as digits as its factorization.

121020002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144243988.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121020002011 its reverse (110200020121), we get a palindrome (231220022132).

It can be divided in two parts, 1 and 21020002011, that added together give a palindrome (21020002012).

The spelling of 121020002011 in words is "one hundred twenty-one billion, twenty million, two thousand, eleven".