121401012127 has 2 divisors, whose sum is σ = 121401012128. Its totient is φ = 121401012126.

The previous prime is 121401012097. The next prime is 121401012157. The reversal of 121401012127 is 721210104121.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (121401012097) and next prime (121401012157).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121401012127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121401012098 and 121401012107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121401012157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60700506063 + 60700506064.

It is an arithmetic number, because the mean of its divisors is an integer number (60700506064).

Almost surely, 2^121401012127 is an apocalyptic number.

121401012127 is a deficient number, since it is larger than the sum of its proper divisors (1).

121401012127 is an equidigital number, since it uses as much as digits as its factorization.

121401012127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 121401012127 its reverse (721210104121), we get a palindrome (842611116248).

The spelling of 121401012127 in words is "one hundred twenty-one billion, four hundred one million, twelve thousand, one hundred twenty-seven".