1021012010122 has 16 divisors (see below), whose sum is σ = 1649514103272. Its totient is φ = 471182880960.

The previous prime is 1021012010089. The next prime is 1021012010129. The reversal of 1021012010122 is 2210102101201.

It can be written as a sum of positive squares in 4 ways, for example, as 1015199320041 + 5812690081 = 1007571^2 + 76241^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1021012010129) 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, 1992129 + ... + 2451652.

Almost surely, 2^{1021012010122} is an apocalyptic number.

1021012010122 is a deficient number, since it is larger than the sum of its proper divisors (628502093150).

1021012010122 is a wasteful number, since it uses less digits than its factorization.

1021012010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452633.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021012010122 its reverse (2210102101201), we get a palindrome (3231114111323).

The spelling of 1021012010122 in words is "one trillion, twenty-one billion, twelve million, ten thousand, one hundred twenty-two".