1213011021031 has 8 divisors (see below), whose sum is σ = 1219144759200. Its totient is φ = 1206877665312.

The previous prime is 1213011020999. The next prime is 1213011021071. The reversal of 1213011021031 is 1301201103121.

It is a happy number.

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 1213011021031 - 2⁵ = 1213011020999 is a prime.

It is a super-2 number, since 2×1213011021031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213011020996 and 1213011021014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213011021071) 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, 7982841 + ... + 8133373.

It is an arithmetic number, because the mean of its divisors is an integer number (152393094900).

Almost surely, 2^{1213011021031} is an apocalyptic number.

1213011021031 is a deficient number, since it is larger than the sum of its proper divisors (6133738169).

1213011021031 is a wasteful number, since it uses less digits than its factorization.

1213011021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191225.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1213011021031 its reverse (1301201103121), we get a palindrome (2514212124152).

The spelling of 1213011021031 in words is "one trillion, two hundred thirteen billion, eleven million, twenty-one thousand, thirty-one".