1212030321131 has 64 divisors (see below), whose sum is σ = 1522242699264. Its totient is φ = 941432025600.

The previous prime is 1212030321119. The next prime is 1212030321143. The reversal of 1212030321131 is 1311230302121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1212030321119) and next prime (1212030321143).

It is a cyclic number.

It is not a de Polignac number, because 1212030321131 - 2¹⁰ = 1212030320107 is a prime.

It is a super-2 number, since 2×1212030321131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212030321101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 363862136 + ... + 363865466.

It is an arithmetic number, because the mean of its divisors is an integer number (23785042176).

Almost surely, 2^{1212030321131} is an apocalyptic number.

1212030321131 is a deficient number, since it is larger than the sum of its proper divisors (310212378133).

1212030321131 is a wasteful number, since it uses less digits than its factorization.

1212030321131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1212030321131 its reverse (1311230302121), we get a palindrome (2523260623252).

The spelling of 1212030321131 in words is "one trillion, two hundred twelve billion, thirty million, three hundred twenty-one thousand, one hundred thirty-one".