101220102011 has 16 divisors (see below), whose sum is σ = 120571097088. Its totient is φ = 83146197600.

The previous prime is 101220101989. The next prime is 101220102031. The reversal of 101220102011 is 110201022101.

It is a cyclic number.

It is not a de Polignac number, because 101220102011 - 2¹⁴ = 101220085627 is a prime.

It is a super-2 number, since 2×101220102011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220101983 and 101220102001.

It is not an unprimeable number, because it can be changed into a prime (101220102031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2241980 + ... + 2286681.

It is an arithmetic number, because the mean of its divisors is an integer number (7535693568).

Almost surely, 2^101220102011 is an apocalyptic number.

101220102011 is a deficient number, since it is larger than the sum of its proper divisors (19350995077).

101220102011 is a wasteful number, since it uses less digits than its factorization.

101220102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528802.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101220102011 its reverse (110201022101), we get a palindrome (211421124112).

The spelling of 101220102011 in words is "one hundred one billion, two hundred twenty million, one hundred two thousand, eleven".