1101220120001 has 2 divisors, whose sum is σ = 1101220120002. Its totient is φ = 1101220120000.

The previous prime is 1101220119983. The next prime is 1101220120043. The reversal of 1101220120001 is 1000210221011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 887938713025 + 213281406976 = 942305^2 + 461824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101220120001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101220120051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610060000 + 550610060001.

It is an arithmetic number, because the mean of its divisors is an integer number (550610060001).

Almost surely, 2^{1101220120001} is an apocalyptic number.

It is an amenable number.

1101220120001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101220120001 is an equidigital number, since it uses as much as digits as its factorization.

1101220120001 is an evil number, because the sum of its binary digits is even.

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

Adding to 1101220120001 its reverse (1000210221011), we get a palindrome (2101430341012).

It can be divided in two parts, 1101220 and 120001, that added together give a palindrome (1221221).

The spelling of 1101220120001 in words is "one trillion, one hundred one billion, two hundred twenty million, one hundred twenty thousand, one".