1213043101 has 8 divisors (see below), whose sum is σ = 1228727808. Its totient is φ = 1197456000.

The previous prime is 1213043017. The next prime is 1213043137. The reversal of 1213043101 is 1013403121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213043101 - 2²¹ = 1210945949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213043141) 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, 781 + ... + 49261.

It is an arithmetic number, because the mean of its divisors is an integer number (153590976).

Almost surely, 2^1213043101 is an apocalyptic number.

It is an amenable number.

1213043101 is a deficient number, since it is larger than the sum of its proper divisors (15684707).

1213043101 is a wasteful number, since it uses less digits than its factorization.

1213043101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48803.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1213043101 is about 34828.7682957638. The cubic root of 1213043101 is about 1066.4948044181.

Adding to 1213043101 its reverse (1013403121), we get a palindrome (2226446222).

The spelling of 1213043101 in words is "one billion, two hundred thirteen million, forty-three thousand, one hundred one".