101211111010 has 8 divisors (see below), whose sum is σ = 182179999836. Its totient is φ = 40484444400.

The previous prime is 101211110989. The next prime is 101211111017. The reversal of 101211111010 is 10111112101.

It can be written as a sum of positive squares in 2 ways, for example, as 93294204481 + 7916906529 = 305441^2 + 88977^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 10121111101 = 101211111010 / (1 + 0 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (101211111017) 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, 5060555541 + ... + 5060555560.

Almost surely, 2^101211111010 is an apocalyptic number.

101211111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101211111010 is a deficient number, since it is larger than the sum of its proper divisors (80968888826).

101211111010 is a wasteful number, since it uses less digits than its factorization.

101211111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10121111108.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 101211111010 its reverse (10111112101), we get a palindrome (111322223111).

The spelling of 101211111010 in words is "one hundred one billion, two hundred eleven million, one hundred eleven thousand, ten".