22012202121000 has 512 divisors, whose sum is σ = 84573949824000. Its totient is φ = 4641745305600.

The previous prime is 22012202120983. The next prime is 22012202121017. The reversal of 22012202121000 is 12120221022.

It is an interprime number because it is at equal distance from previous prime (22012202120983) and next prime (22012202121017).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 511307476 + ... + 511350524.

It is an arithmetic number, because the mean of its divisors is an integer number (165183495750).

Almost surely, 2^{22012202121000} is an apocalyptic number.

22012202121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22012202121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42286974912000).

22012202121000 is an abundant number, since it is smaller than the sum of its proper divisors (62561747703000).

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

22012202121000 is a wasteful number, since it uses less digits than its factorization.

22012202121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44966 (or 44952 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22012202121000 its reverse (12120221022), we get a palindrome (22024322342022).

The spelling of 22012202121000 in words is "twenty-two trillion, twelve billion, two hundred two million, one hundred twenty-one thousand".