1023212011 has 4 divisors (see below), whose sum is σ = 1042517952. Its totient is φ = 1003906072.

The previous prime is 1023211979. The next prime is 1023212039. The reversal of 1023212011 is 1102123201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1102123201 = 157 ⋅7019893.

It is not a de Polignac number, because 1023212011 - 2⁵ = 1023211979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023211982 and 1023212000.

It is not an unprimeable number, because it can be changed into a prime (1023212041) 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, 9652891 + ... + 9652996.

It is an arithmetic number, because the mean of its divisors is an integer number (260629488).

Almost surely, 2^1023212011 is an apocalyptic number.

1023212011 is a deficient number, since it is larger than the sum of its proper divisors (19305941).

1023212011 is an equidigital number, since it uses as much as digits as its factorization.

1023212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19305940.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1023212011 is about 31987.6853023160. The cubic root of 1023212011 is about 1007.6782308799.

Adding to 1023212011 its reverse (1102123201), we get a palindrome (2125335212).

The spelling of 1023212011 in words is "one billion, twenty-three million, two hundred twelve thousand, eleven".