1201654121 has 8 divisors (see below), whose sum is σ = 1264161600. Its totient is φ = 1140551440.

The previous prime is 1201654109. The next prime is 1201654133. The reversal of 1201654121 is 1214561021.

It is an interprime number because it is at equal distance from previous prime (1201654109) and next prime (1201654133).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201654121 - 2⁶ = 1201654057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201654141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349445 + ... + 352866.

It is an arithmetic number, because the mean of its divisors is an integer number (158020200).

Almost surely, 2^1201654121 is an apocalyptic number.

It is an amenable number.

1201654121 is a deficient number, since it is larger than the sum of its proper divisors (62507479).

1201654121 is an equidigital number, since it uses as much as digits as its factorization.

1201654121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702399.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1201654121 is about 34664.8831095678. The cubic root of 1201654121 is about 1063.1466132988.

The spelling of 1201654121 in words is "one billion, two hundred one million, six hundred fifty-four thousand, one hundred twenty-one".