1012000202121 has 4 divisors (see below), whose sum is σ = 1349333602832. Its totient is φ = 674666801412.

The previous prime is 1012000202117. The next prime is 1012000202153. The reversal of 1012000202121 is 1212020002101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1012000202121 - 2² = 1012000202117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012000202097 and 1012000202106.

It is not an unprimeable number, because it can be changed into a prime (1012000202021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168666700351 + ... + 168666700356.

It is an arithmetic number, because the mean of its divisors is an integer number (337333400708).

Almost surely, 2^{1012000202121} is an apocalyptic number.

It is an amenable number.

1012000202121 is a deficient number, since it is larger than the sum of its proper divisors (337333400711).

1012000202121 is an equidigital number, since it uses as much as digits as its factorization.

1012000202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337333400710.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1012000202121 its reverse (1212020002101), we get a palindrome (2224020204222).

It can be divided in two parts, 1012000 and 202121, that added together give a palindrome (1214121).

The spelling of 1012000202121 in words is "one trillion, twelve billion, two hundred two thousand, one hundred twenty-one".