20402131041222 has 64 divisors (see below), whose sum is σ = 49414658135040. Its totient is φ = 5482057107456.

The previous prime is 20402131041211. The next prime is 20402131041241. The reversal of 20402131041222 is 22214013120402.

It is a junction number, because it is equal to n+sod(n) for n = 20402131041192 and 20402131041201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10089522 + ... + 11941637.

It is an arithmetic number, because the mean of its divisors is an integer number (772104033360).

Almost surely, 2^{20402131041222} is an apocalyptic number.

20402131041222 is an abundant number, since it is smaller than the sum of its proper divisors (29012527093818).

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

20402131041222 is a wasteful number, since it uses less digits than its factorization.

20402131041222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22032485.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 20402131041222 its reverse (22214013120402), we get a palindrome (42616144161624).

The spelling of 20402131041222 in words is "twenty trillion, four hundred two billion, one hundred thirty-one million, forty-one thousand, two hundred twenty-two".