20111221141 has 8 divisors (see below), whose sum is σ = 21983137344. Its totient is φ = 18246575520.

The previous prime is 20111221121. The next prime is 20111221147. The reversal of 20111221141 is 14112211102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20111221141 - 2¹⁵ = 20111188373 is a prime.

It is a super-2 number, since 2×20111221141² (a number of 21 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 (20111221147) 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, 1811856 + ... + 1822921.

It is an arithmetic number, because the mean of its divisors is an integer number (2747892168).

Almost surely, 2^20111221141 is an apocalyptic number.

It is an amenable number.

20111221141 is a deficient number, since it is larger than the sum of its proper divisors (1871916203).

20111221141 is a wasteful number, since it uses less digits than its factorization.

20111221141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635291.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20111221141 its reverse (14112211102), we get a palindrome (34223432243).

The spelling of 20111221141 in words is "twenty billion, one hundred eleven million, two hundred twenty-one thousand, one hundred forty-one".