121130400154 has 16 divisors (see below), whose sum is σ = 184274170560. Its totient is φ = 59705857120.

The previous prime is 121130400119. The next prime is 121130400187. The reversal of 121130400154 is 451004031121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1485222 + ... + 1564654.

It is an arithmetic number, because the mean of its divisors is an integer number (11517135660).

Almost surely, 2^121130400154 is an apocalyptic number.

121130400154 is a deficient number, since it is larger than the sum of its proper divisors (63143770406).

121130400154 is a wasteful number, since it uses less digits than its factorization.

121130400154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90245.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 121130400154 its reverse (451004031121), we get a palindrome (572134431275).

It can be divided in two parts, 121130 and 400154, that added together give a square (521284 = 722²).

The spelling of 121130400154 in words is "one hundred twenty-one billion, one hundred thirty million, four hundred thousand, one hundred fifty-four".