101211121010 has 16 divisors (see below), whose sum is σ = 182823768576. Its totient is φ = 40341392688.

The previous prime is 101211121009. The next prime is 101211121019. The reversal of 101211121010 is 10121112101.

It is a super-2 number, since 2×101211121010² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101211120982 and 101211121000.

It is not an unprimeable number, because it can be changed into a prime (101211121019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17878994 + ... + 17884653.

It is an arithmetic number, because the mean of its divisors is an integer number (11426485536).

Almost surely, 2^101211121010 is an apocalyptic number.

101211121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101211121010 is a deficient number, since it is larger than the sum of its proper divisors (81612647566).

101211121010 is a wasteful number, since it uses less digits than its factorization.

101211121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35763937.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 101211121010 its reverse (10121112101), we get a palindrome (111332233111).

The spelling of 101211121010 in words is "one hundred one billion, two hundred eleven million, one hundred twenty-one thousand, ten".