1020020211146 has 4 divisors (see below), whose sum is σ = 1530030316722. Its totient is φ = 510010105572.

The previous prime is 1020020211131. The next prime is 1020020211191. The reversal of 1020020211146 is 6411120200201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 854310155521 + 165710055625 = 924289^2 + 407075^2 .

It is a super-2 number, since 2×1020020211146² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255005052785 + ... + 255005052788.

Almost surely, 2^{1020020211146} is an apocalyptic number.

1020020211146 is a deficient number, since it is larger than the sum of its proper divisors (510010105576).

1020020211146 is an equidigital number, since it uses as much as digits as its factorization.

1020020211146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510010105575.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1020020211146 its reverse (6411120200201), we get a palindrome (7431140411347).

The spelling of 1020020211146 in words is "one trillion, twenty billion, twenty million, two hundred eleven thousand, one hundred forty-six".