121402655461 has 4 divisors (see below), whose sum is σ = 122276056000. Its totient is φ = 120529254924.

The previous prime is 121402655449. The next prime is 121402655497. The reversal of 121402655461 is 164556204121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121402655461 - 2⁷ = 121402655333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121402655461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121402655401) 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, 436700061 + ... + 436700338.

It is an arithmetic number, because the mean of its divisors is an integer number (30569014000).

Almost surely, 2^121402655461 is an apocalyptic number.

It is an amenable number.

121402655461 is a deficient number, since it is larger than the sum of its proper divisors (873400539).

121402655461 is an equidigital number, since it uses as much as digits as its factorization.

121402655461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873400538.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 121402655461 its reverse (164556204121), we get a palindrome (285958859582).

The spelling of 121402655461 in words is "one hundred twenty-one billion, four hundred two million, six hundred fifty-five thousand, four hundred sixty-one".