1211101030 has 16 divisors (see below), whose sum is σ = 2180715120. Its totient is φ = 484277472.

The previous prime is 1211101027. The next prime is 1211101081. The reversal of 1211101030 is 301011121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1211100998 and 1211101016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13537 + ... + 51043.

It is an arithmetic number, because the mean of its divisors is an integer number (136294695).

Almost surely, 2^1211101030 is an apocalyptic number.

1211101030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211101030 is a deficient number, since it is larger than the sum of its proper divisors (969614090).

1211101030 is a wasteful number, since it uses less digits than its factorization.

1211101030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40743.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1211101030 is about 34800.8768567690. The cubic root of 1211101030 is about 1065.9253509110.

Adding to 1211101030 its reverse (301011121), we get a palindrome (1512112151).

The spelling of 1211101030 in words is "one billion, two hundred eleven million, one hundred one thousand, thirty".