1000031220101 has 2 divisors, whose sum is σ = 1000031220102. Its totient is φ = 1000031220100.

The previous prime is 1000031220091. The next prime is 1000031220107. The reversal of 1000031220101 is 1010221300001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 986863428100 + 13167792001 = 993410^2 + 114751^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000031220101 - 2⁶ = 1000031220037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000031220107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500015610050 + 500015610051.

It is an arithmetic number, because the mean of its divisors is an integer number (500015610051).

Almost surely, 2^{1000031220101} is an apocalyptic number.

It is an amenable number.

1000031220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000031220101 is an equidigital number, since it uses as much as digits as its factorization.

1000031220101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1000031220101 its reverse (1010221300001), we get a palindrome (2010252520102).

The spelling of 1000031220101 in words is "one trillion, thirty-one million, two hundred twenty thousand, one hundred one".