20121100312070 has 32 divisors (see below), whose sum is σ = 36234002756160. Its totient is φ = 8044880330880.

The previous prime is 20121100312063. The next prime is 20121100312091. The reversal of 20121100312070 is 7021300112102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267391511 + ... + 267466749.

It is an arithmetic number, because the mean of its divisors is an integer number (1132312586130).

Almost surely, 2^{20121100312070} is an apocalyptic number.

20121100312070 is a deficient number, since it is larger than the sum of its proper divisors (16112902444090).

20121100312070 is a wasteful number, since it uses less digits than its factorization.

20121100312070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86720.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 20121100312070 its reverse (7021300112102), we get a palindrome (27142400424172).

The spelling of 20121100312070 in words is "twenty trillion, one hundred twenty-one billion, one hundred million, three hundred twelve thousand, seventy".