1020211112 has 8 divisors (see below), whose sum is σ = 1912895850. Its totient is φ = 510105552.

The previous prime is 1020211063. The next prime is 1020211117. The reversal of 1020211112 is 2111120201.

It can be written as a sum of positive squares in only one way, i.e., 940894276 + 79316836 = 30674^2 + 8906^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1020211093 and 1020211102.

It is not an unprimeable number, because it can be changed into a prime (1020211117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63763187 + ... + 63763202.

Almost surely, 2^1020211112 is an apocalyptic number.

It is an amenable number.

1020211112 is a deficient number, since it is larger than the sum of its proper divisors (892684738).

1020211112 is a wasteful number, since it uses less digits than its factorization.

1020211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127526395 (or 127526391 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1020211112 is about 31940.7437609083. The cubic root of 1020211112 is about 1006.6921525254.

Adding to 1020211112 its reverse (2111120201), we get a palindrome (3131331313).

The spelling of 1020211112 in words is "one billion, twenty million, two hundred eleven thousand, one hundred twelve".