121952400348 has 48 divisors (see below), whose sum is σ = 297005538816. Its totient is φ = 38873165760.

The previous prime is 121952400347. The next prime is 121952400359. The reversal of 121952400348 is 843004259121.

It is a super-2 number, since 2×121952400348² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121952400341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1032238 + ... + 1144298.

It is an arithmetic number, because the mean of its divisors is an integer number (6187615392).

Almost surely, 2^121952400348 is an apocalyptic number.

It is an amenable number.

121952400348 is an abundant number, since it is smaller than the sum of its proper divisors (175053138468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121952400348 is a wasteful number, since it uses less digits than its factorization.

121952400348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116034 (or 116032 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

Adding to 121952400348 its reverse (843004259121), we get a palindrome (964956659469).

The spelling of 121952400348 in words is "one hundred twenty-one billion, nine hundred fifty-two million, four hundred thousand, three hundred forty-eight".