10211211028 has 6 divisors (see below), whose sum is σ = 17869619306. Its totient is φ = 5105605512.

The previous prime is 10211211001. The next prime is 10211211029. The reversal of 10211211028 is 82011211201.

It can be written as a sum of positive squares in only one way, i.e., 7228740484 + 2982470544 = 85022^2 + 54612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10211210996 and 10211211014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211211029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276401375 + ... + 1276401382.

Almost surely, 2^10211211028 is an apocalyptic number.

It is an amenable number.

10211211028 is a deficient number, since it is larger than the sum of its proper divisors (7658408278).

10211211028 is a wasteful number, since it uses less digits than its factorization.

10211211028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552802761 (or 2552802759 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 10211211028 its reverse (82011211201), we get a palindrome (92222422229).

The spelling of 10211211028 in words is "ten billion, two hundred eleven million, two hundred eleven thousand, twenty-eight".