11211220101102 has 32 divisors (see below), whose sum is σ = 25651348795392. Its totient is φ = 3199992886944.

The previous prime is 11211220101101. The next prime is 11211220101113. The reversal of 11211220101102 is 20110102211211.

It is a happy number.

11211220101102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11211220101102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211220101101) 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, 133826638 + ... + 133910385.

It is an arithmetic number, because the mean of its divisors is an integer number (801604649856).

Almost surely, 2^{11211220101102} is an apocalyptic number.

11211220101102 is an abundant number, since it is smaller than the sum of its proper divisors (14440128694290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211220101102 is a wasteful number, since it uses less digits than its factorization.

11211220101102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267738032.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11211220101102 its reverse (20110102211211), we get a palindrome (31321322312313).

The spelling of 11211220101102 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, one hundred one thousand, one hundred two".