121223140401 has 64 divisors (see below), whose sum is σ = 183685856256. Its totient is φ = 70466457600.

The previous prime is 121223140399. The next prime is 121223140421. The reversal of 121223140401 is 104041322121.

It is not a de Polignac number, because 121223140401 - 2¹ = 121223140399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121223140421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61007130 + ... + 61009116.

It is an arithmetic number, because the mean of its divisors is an integer number (2870091504).

Almost surely, 2^121223140401 is an apocalyptic number.

121223140401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121223140401 is a deficient number, since it is larger than the sum of its proper divisors (62462715855).

121223140401 is a wasteful number, since it uses less digits than its factorization.

121223140401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 121223140401 its reverse (104041322121), we get a palindrome (225264462522).

The spelling of 121223140401 in words is "one hundred twenty-one billion, two hundred twenty-three million, one hundred forty thousand, four hundred one".