11402123262121 has 2 divisors, whose sum is σ = 11402123262122. Its totient is φ = 11402123262120.

The previous prime is 11402123262109. The next prime is 11402123262133. The reversal of 11402123262121 is 12126232120411.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (11402123262109) and next prime (11402123262133).

It can be written as a sum of positive squares in only one way, i.e., 11372946864400 + 29176397721 = 3372380^2 + 170811^2 .

It is a cyclic number.

It is not a de Polignac number, because 11402123262121 - 2³¹ = 11399975778473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11402123262121.

It is not a weakly prime, because it can be changed into another prime (11402123262161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5701061631060 + 5701061631061.

It is an arithmetic number, because the mean of its divisors is an integer number (5701061631061).

Almost surely, 2^{11402123262121} is an apocalyptic number.

It is an amenable number.

11402123262121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11402123262121 is an equidigital number, since it uses as much as digits as its factorization.

11402123262121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 11402123262121 its reverse (12126232120411), we get a palindrome (23528355382532).

The spelling of 11402123262121 in words is "eleven trillion, four hundred two billion, one hundred twenty-three million, two hundred sixty-two thousand, one hundred twenty-one".