11111021002 has 8 divisors (see below), whose sum is σ = 16667333316. Its totient is φ = 5555243232.

The previous prime is 11111020993. The next prime is 11111021003. The reversal of 11111021002 is 20012011111.

It can be written as a sum of positive squares in 2 ways, for example, as 10306107361 + 804913641 = 101519^2 + 28371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11111021002.

It is not an unprimeable number, because it can be changed into a prime (11111021003) 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, 76843 + ... + 167710.

Almost surely, 2^11111021002 is an apocalyptic number.

11111021002 is a deficient number, since it is larger than the sum of its proper divisors (5556312314).

11111021002 is a wasteful number, since it uses less digits than its factorization.

11111021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267272.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11111021002 its reverse (20012011111), we get a palindrome (31123032113).

The spelling of 11111021002 in words is "eleven billion, one hundred eleven million, twenty-one thousand, two".