1012022201021 has 8 divisors (see below), whose sum is σ = 1089884482680. Its totient is φ = 934161979392.

The previous prime is 1012022200993. The next prime is 1012022201051. The reversal of 1012022201021 is 1201022202101.

It can be written as a sum of positive squares in 4 ways, for example, as 24803100100 + 987219100921 = 157490^2 + 993589^2 .

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 1012022201021 - 2²² = 1012018006717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012022200987 and 1012022201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012022201051) 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, 593741 + ... + 1541613.

It is an arithmetic number, because the mean of its divisors is an integer number (136235560335).

Almost surely, 2^{1012022201021} is an apocalyptic number.

It is an amenable number.

1012022201021 is a deficient number, since it is larger than the sum of its proper divisors (77862281659).

1012022201021 is an equidigital number, since it uses as much as digits as its factorization.

1012022201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030015.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1012022201021 its reverse (1201022202101), we get a palindrome (2213044403122).

The spelling of 1012022201021 in words is "one trillion, twelve billion, twenty-two million, two hundred one thousand, twenty-one".