1220100020231 has 2 divisors, whose sum is σ = 1220100020232. Its totient is φ = 1220100020230.

The previous prime is 1220100020213. The next prime is 1220100020339. The reversal of 1220100020231 is 1320200010221.

It is a happy number.

Together with previous prime (1220100020213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220100020231 is a prime.

It is a super-2 number, since 2×1220100020231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220100020201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610050010115 + 610050010116.

It is an arithmetic number, because the mean of its divisors is an integer number (610050010116).

Almost surely, 2^{1220100020231} is an apocalyptic number.

1220100020231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220100020231 is an equidigital number, since it uses as much as digits as its factorization.

1220100020231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1220100020231 its reverse (1320200010221), we get a palindrome (2540300030452).

The spelling of 1220100020231 in words is "one trillion, two hundred twenty billion, one hundred million, twenty thousand, two hundred thirty-one".