1301210121 has 16 divisors (see below), whose sum is σ = 1748039040. Its totient is φ = 860952960.

The previous prime is 1301210111. The next prime is 1301210137. The reversal of 1301210121 is 1210121031.

It is not a de Polignac number, because 1301210121 - 2¹³ = 1301201929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1301210097 and 1301210106.

It is not an unprimeable number, because it can be changed into a prime (1301210101) 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, 218775 + ... + 224643.

It is an arithmetic number, because the mean of its divisors is an integer number (109252440).

Almost surely, 2^1301210121 is an apocalyptic number.

It is an amenable number.

1301210121 is a deficient number, since it is larger than the sum of its proper divisors (446828919).

1301210121 is a wasteful number, since it uses less digits than its factorization.

1301210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6416.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1301210121 is about 36072.2902100768. The cubic root of 1301210121 is about 1091.7314235372.

Adding to 1301210121 its reverse (1210121031), we get a palindrome (2511331152).

The spelling of 1301210121 in words is "one billion, three hundred one million, two hundred ten thousand, one hundred twenty-one".