1201352121 has 16 divisors (see below), whose sum is σ = 1873454400. Its totient is φ = 758748384.

The previous prime is 1201352063. The next prime is 1201352129. The reversal of 1201352121 is 1212531021.

1201352121 is a `hidden beast` number, since 120 + 1 + 3 + 521 + 21 = 666.

It is not a de Polignac number, because 1201352121 - 2¹³ = 1201343929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201352094 and 1201352103.

It is not an unprimeable number, because it can be changed into a prime (1201352129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1170396 + ... + 1171421.

It is an arithmetic number, because the mean of its divisors is an integer number (117090900).

Almost surely, 2^1201352121 is an apocalyptic number.

It is an amenable number.

1201352121 is a deficient number, since it is larger than the sum of its proper divisors (672102279).

1201352121 is a wasteful number, since it uses less digits than its factorization.

1201352121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341845 (or 2341839 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1201352121 is about 34660.5268425049. The cubic root of 1201352121 is about 1063.0575424165.

Adding to 1201352121 its reverse (1212531021), we get a palindrome (2413883142).

The spelling of 1201352121 in words is "one billion, two hundred one million, three hundred fifty-two thousand, one hundred twenty-one".