11020103121961 has 2 divisors, whose sum is σ = 11020103121962. Its totient is φ = 11020103121960.

The previous prime is 11020103121931. The next prime is 11020103122009. The reversal of 11020103121961 is 16912130102011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9404458755561 + 1615644366400 = 3066669^2 + 1271080^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020103121961 - 2¹¹ = 11020103119913 is a prime.

It is a super-3 number, since 3×11020103121961³ (a number of 40 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11020103121931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510051560980 + 5510051560981.

It is an arithmetic number, because the mean of its divisors is an integer number (5510051560981).

Almost surely, 2^{11020103121961} is an apocalyptic number.

It is an amenable number.

11020103121961 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020103121961 is an equidigital number, since it uses as much as digits as its factorization.

11020103121961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

Adding to 11020103121961 its reverse (16912130102011), we get a palindrome (27932233223972).

The spelling of 11020103121961 in words is "eleven trillion, twenty billion, one hundred three million, one hundred twenty-one thousand, nine hundred sixty-one".