122220021402 has 48 divisors (see below), whose sum is σ = 276846373440. Its totient is φ = 38968632648.

The previous prime is 122220021353. The next prime is 122220021403. The reversal of 122220021402 is 204120022221.

122220021402 is a `hidden beast` number, since 1 + 22 + 220 + 0 + 21 + 402 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (122220021403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60028 + ... + 498039.

It is an arithmetic number, because the mean of its divisors is an integer number (5767632780).

Almost surely, 2^122220021402 is an apocalyptic number.

122220021402 is an abundant number, since it is smaller than the sum of its proper divisors (154626352038).

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

122220021402 is an equidigital number, since it uses as much as digits as its factorization.

122220021402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558144 (or 558095 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 122220021402 its reverse (204120022221), we get a palindrome (326340043623).

The spelling of 122220021402 in words is "one hundred twenty-two billion, two hundred twenty million, twenty-one thousand, four hundred two".