121223001420 has 36 divisors (see below), whose sum is σ = 367709771520. Its totient is φ = 32326133664.

The previous prime is 121223001409. The next prime is 121223001439. The reversal of 121223001420 is 24100322121.

It is a happy number.

121223001420 is a `hidden beast` number, since 1 + 2 + 12 + 230 + 0 + 1 + 420 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121223001393 and 121223001402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336730380 + ... + 336730739.

It is an arithmetic number, because the mean of its divisors is an integer number (10214160320).

Almost surely, 2^121223001420 is an apocalyptic number.

121223001420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121223001420 is an abundant number, since it is smaller than the sum of its proper divisors (246486770100).

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

121223001420 is a wasteful number, since it uses less digits than its factorization.

121223001420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673461134 (or 673461129 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121223001420 its reverse (24100322121), we get a palindrome (145323323541).

The spelling of 121223001420 in words is "one hundred twenty-one billion, two hundred twenty-three million, one thousand, four hundred twenty".