1213420101 has 32 divisors (see below), whose sum is σ = 1731362688. Its totient is φ = 753285120.

The previous prime is 1213420081. The next prime is 1213420127. The reversal of 1213420101 is 1010243121.

It is not a de Polignac number, because 1213420101 - 2¹³ = 1213411909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213420141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3252951 + ... + 3253323.

It is an arithmetic number, because the mean of its divisors is an integer number (54105084).

Almost surely, 2^1213420101 is an apocalyptic number.

It is an amenable number.

1213420101 is a deficient number, since it is larger than the sum of its proper divisors (517942587).

1213420101 is a wasteful number, since it uses less digits than its factorization.

1213420101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1213420101 is about 34834.1800678586. The cubic root of 1213420101 is about 1066.6052777930.

Adding to 1213420101 its reverse (1010243121), we get a palindrome (2223663222).

The spelling of 1213420101 in words is "one billion, two hundred thirteen million, four hundred twenty thousand, one hundred one".