121400044550 has 24 divisors (see below), whose sum is σ = 231055344696. Its totient is φ = 47430714240.

The previous prime is 121400044541. The next prime is 121400044559. The reversal of 121400044550 is 55440004121.

121400044550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (121400044541) and next prime (121400044559).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121400044559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28230419 + ... + 28234718.

It is an arithmetic number, because the mean of its divisors is an integer number (9627306029).

Almost surely, 2^121400044550 is an apocalyptic number.

121400044550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121400044550 is a deficient number, since it is larger than the sum of its proper divisors (109655300146).

121400044550 is a wasteful number, since it uses less digits than its factorization.

121400044550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56465192 (or 56465187 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 121400044550 its reverse (55440004121), we get a palindrome (176840048671).

The spelling of 121400044550 in words is "one hundred twenty-one billion, four hundred million, forty-four thousand, five hundred fifty".