21229190070 has 64 divisors (see below), whose sum is σ = 55618617600. Its totient is φ = 5143068800.

The previous prime is 21229190009. The next prime is 21229190071. The reversal of 21229190070 is 7009192212.

It is a super-4 number, since 4×21229190070⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21229190071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497956 + ... + 538904.

It is an arithmetic number, because the mean of its divisors is an integer number (869040900).

Almost surely, 2^21229190070 is an apocalyptic number.

21229190070 is an abundant number, since it is smaller than the sum of its proper divisors (34389427530).

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

21229190070 is a wasteful number, since it uses less digits than its factorization.

21229190070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42541.

The product of its (nonzero) digits is 4536, while the sum is 33.

The spelling of 21229190070 in words is "twenty-one billion, two hundred twenty-nine million, one hundred ninety thousand, seventy".