121402420351 has 2 divisors, whose sum is σ = 121402420352. Its totient is φ = 121402420350.

The previous prime is 121402420339. The next prime is 121402420409. The reversal of 121402420351 is 153024204121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121402420351 - 2¹¹ = 121402418303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121402420151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60701210175 + 60701210176.

It is an arithmetic number, because the mean of its divisors is an integer number (60701210176).

Almost surely, 2^121402420351 is an apocalyptic number.

121402420351 is a deficient number, since it is larger than the sum of its proper divisors (1).

121402420351 is an equidigital number, since it uses as much as digits as its factorization.

121402420351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 121402420351 its reverse (153024204121), we get a palindrome (274426624472).

The spelling of 121402420351 in words is "one hundred twenty-one billion, four hundred two million, four hundred twenty thousand, three hundred fifty-one".