11021040400542 has 32 divisors (see below), whose sum is σ = 22092569275392. Its totient is φ = 3665274928224.

The previous prime is 11021040400541. The next prime is 11021040400577. The reversal of 11021040400542 is 24500404012011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021040400541) 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, 3432523 + ... + 5815865.

It is an arithmetic number, because the mean of its divisors is an integer number (690392789856).

Almost surely, 2^{11021040400542} is an apocalyptic number.

11021040400542 is an abundant number, since it is smaller than the sum of its proper divisors (11071528874850).

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

11021040400542 is a wasteful number, since it uses less digits than its factorization.

11021040400542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385112.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 11021040400542 its reverse (24500404012011), we get a palindrome (35521444412553).

The spelling of 11021040400542 in words is "eleven trillion, twenty-one billion, forty million, four hundred thousand, five hundred forty-two".