11011220021210 has 16 divisors (see below), whose sum is σ = 19823207886792. Its totient is φ = 4403818708800.

The previous prime is 11011220021201. The next prime is 11011220021237. The reversal of 11011220021210 is 1212002211011.

It can be written as a sum of positive squares in 4 ways, for example, as 5721123420769 + 5290096600441 = 2391887^2 + 2300021^2 .

It is a super-3 number, since 3×11011220021210³ (a number of 40 digits) contains 333 as substring.

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, 83593361 + ... + 83724980.

Almost surely, 2^{11011220021210} is an apocalyptic number.

11011220021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11011220021210 is a deficient number, since it is larger than the sum of its proper divisors (8811987865582).

11011220021210 is a wasteful number, since it uses less digits than its factorization.

11011220021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167324929.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11011220021210 its reverse (1212002211011), we get a palindrome (12223222232221).

The spelling of 11011220021210 in words is "eleven trillion, eleven billion, two hundred twenty million, twenty-one thousand, two hundred ten".