11220121431309 has 16 divisors (see below), whose sum is σ = 17997187258880. Its totient is φ = 6074050699440.

The previous prime is 11220121431251. The next prime is 11220121431367. The reversal of 11220121431309 is 90313412102211.

It is an interprime number because it is at equal distance from previous prime (11220121431251) and next prime (11220121431367).

It is not a de Polignac number, because 11220121431309 - 2¹³ = 11220121423117 is a prime.

It is a super-2 number, since 2×11220121431309² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220121431709) 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, 14060302147 + ... + 14060302944.

It is an arithmetic number, because the mean of its divisors is an integer number (1124824203680).

Almost surely, 2^{11220121431309} is an apocalyptic number.

11220121431309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11220121431309 is a deficient number, since it is larger than the sum of its proper divisors (6777065827571).

11220121431309 is a wasteful number, since it uses less digits than its factorization.

11220121431309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28120605120.

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 11220121431309 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, four hundred thirty-one thousand, three hundred nine".